Pouzolzia

P. hirta (L.) Hassk. var. hirta (Images by Nidhan Singh (Id by Balkar Singh), Raju Das (id by Ritesh Kumar Choudhary), Balkar Singh (validated by Nidhan Singh & Gurcharan Singh) & Ritesh Kumar Choudhary (Inserted by J.M.Garg) (For more images & complete details, click on the links))  
P. pentandra (Roxb.) Benn. & R. Br. ssp. pentandra (Images by Balkar Singh (Id by Tanay Bose & Gurcharan Singh))

P. pentandra (Roxb.) Benn. & R. Br. Ssp. wightii (Benn. & R. Br.) Friis & Wilmot-Dear var. wightii (Images by Dinesh Valke (Id by Surajit Koley) & Gurcharan Singh (Inserted by J.M.Garg) (For more images & complete details, click on the links))

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(Images by Raju Das (Id by Gurcharan Singh) & Prashant Awale (id by Gurcharan Singh)(Inserted by J.M.Garg) (For more images & complete details, click on the links))

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P. zeylanica (L.) Benn. & R. Br. var. zeylanica (Images by Anurag N Sharma (Id by Samir Mehta), Surajit Koley (validation by Satish Phadke),  Dinesh Valke (id assistance by E S Santhosh Kumar), Nadeem Waqif (Id by P. Santhan), Gurcharan Singh, N Muthu Karthick (Id by Mayur Nandikar & K M Prabhu Kumar), Prashant Awale, Debasish Joardar (id by Akram ul Haq) & Manorah (id by Dinesh Valke) ((Inserted by J.M.Garg) (For more images & complete details, click on the links))  

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BSI Flora of India Checklist (Distribution):

Name Distribution
Pouzolzia cymosa Andhra Pradesh, Karnataka, Kerala, Tamil Nadu
Pouzolzia rugulosa Arunachal Pradesh, Assam, Himachal Pradesh, Meghalaya, Mizoram, Nagaland, Sikkim, Uttarakhand, West Bengal
Pouzolzia sanguinea var. sanguinea (Arunachal Pradesh, Assam, Himachal Pradesh, Manipur, Meghalaya, Nagaland, Sikkim, Uttarakhand, West Bengal)
var. fulgens (Wedd.) H. Hara (Arunachal Pradesh, Assam, Manipur, Meghalaya, Nagaland, Sikkim, Uttarakhand, West Bengal)
Pouzolzia sikkimensis Sikkim
Pouzolzia zeylanica India – Throughout

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BSI Flora of India Checklist (Distribution):
Gonostegia hirta (Blume) Miq. (Andhra Pradesh, Arunachal Pradesh, Bihar, Chhattisgarh, Himachal Pradesh, Jammu & Kashmir, Jharkhand, Karnataka, Kerala, Madhya Pradesh, Maharashtra, Northeast, Odisha, Punjab, Sikkim, Tamil Nadu, Telangana, Uttar Pradesh, Uttarakhand, West Bengal) (Syn. of Gonostegia triandra (Blume) Miq.)
Gonostegia pentandra (Roxb.) Miq. ssp. pentandra (Andhra Pradesh, Arunachal Pradesh, Bihar, Chhattisgarh, Himachal Pradesh, Jammu & Kashmir, Karnataka, Kerala, Madhya Pradesh, Maharashtra, Northeast, Odisha, Punjab, Sikkim, Tamil Nadu, Telangana, Uttar Pradesh, Uttarakhand, West Bengal)
ssp. wightii (Benn.) Pusalkar (Andhra Pradesh, Karnataka, Kerala, Maharashtra, Odisha, Telangana, Tamil Nadu)
var. wightii (Benn.) Pusalkar (Andhra Pradesh, Karnataka, Kerala, Maharashtra, Odisha, Telangana, Tamil Nadu)
var. gracilis (Miq.) Pusalkar (Karnataka, Kerala, Tamil Nadu)

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Let us identify our Pouzolzia species: As was mentioned by me a few days ago several uploads of Pouzolzia remain unidentified in our database. Thanks …, we were able to procure recent monograph on Wilmot-Dear, C. M. & Friis, I. 2006. The Old World species of Pouzolzia (Urticaceae, tribus Boehmerieae). A taxonomic revision. – Nord. J. Bot. 24: 5-1 15. Coplenhagen. ISSN 0107-055X
There have been lot of taxonomic realignments of Indian taxa. I have compiled the list of Indian taxa with synonyms and Principal distribution
I have also tried to construct a key relating to Indian taxa. The same is given below and also uploaded in our website. Interested members may go through this information and help in fixing the unidentified plants.

KEY TO INDIAN TAXA OF POUZOLZIA

1a.

Leaf margin of at least some leaves toothed

   2

1b.

Leaf margin always entire

   3

2a.

Lower surface of leaves covered by silky shining appressed  hairs; male flowers 4-merous; upper surface
glabrous with abundant raised cystoliths

P. sanguinea var. fulgens

2b.

Lower surface clearly visible, sparsely covered with hairs, upper leaves usually distinctly reduced in size

P. sanguinea var. sanguinea

3a.

Leaves with clearly visible basal and upper lateral veins; male  bud not surrounded by a rim; leaves often
alternate.

    4

3b.

Leaves 3-veined from base with no upper lateral veins; male  bud surrounded by a rim; all or at least
lower leaves opposite  or whorled

    5

4a.

Flowers in cymose clusters; male clusters on 1-3 cm long peduncles, female sessile in upper axils; all leaves opposite; all veins arising from basal 1/10 portion; hairs and veins forming longitudinal alternating stripes

 P. cymosa

4b.

Flowers always in sessile axillary clusters with flowers of both sexes;
at least some leaves alternate; one pair of veins arising from middle;
veins  inconspicuous, hairs not in stripes..

 P. zeylanica var. zeylanica

5a.

Leaves always opposite or whorled gradually reduced in size above..

    6

5b.

Lower leaves opposite, upper most or those on lateral branches distinctly reduced, alternate and bract-like

    7

6a.

Leaves less than 1.5 cm long, rounded or acute at apex; fruiting perianth with 10 conspicuous longitudinal ribs; male flower 3-4 merous

P. hirta var. parvifolia

6b.

Leaves longer than 2 cm often up to 17 cm, apex acuminate; fruiting perianth with inconspicuous veins; male flower 5-merous

P. hirta var. hirta

7a.

Axillary branches with bract-like leaves numerous in upper part of stem, 1/10-1/30 of normal leaves; normal leaves in whorls of 3-4

P. pentandra subsp. pentandra

7b.

 Axillary branches few or none,
if more not with bract-like leaves (latter not smaller than 1/5 of normal leaves); normal leaves mostly opposite

    8

8a.

Normal leaves shorter than 9 cm, narrower than 1.5 cm; linear to linear-ovate, apex rounded to acute

P.  pentandra subsp. wightii var.   gracilis

8b.

Normal leaves either longer than 9 cm or broader than 2 cm or both, ovate or elliptic ovate, usually acuminate

P.  pentandra subsp. wightii var. wightii

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INDIAN TAXA
P. cymosa Wight (Tamil Nadu)

P. hirta (L.) Hassk. var. hirta Syn: P. bennettiana Wight; P. integrifolia Dalz. (UP, Himachal, E. Himal, Nepal, Sikkim, Bhutan, W. Bengal, Nagaland, Bihar, Orissa, AP, Kerala, Tamil Nadu, Karnataka, Sri Lanka)

P. hirta var. parvifolia (Wight) Friis Syn: P. parvifolia Wight.) (Sri Lanka)

P. pentandra (Roxb.) Benn. & R. Br. ssp. pentandra (Himachal, UP, Bihar, Punjab, Jammu, Nepal, Sikkim, UP, Uttranchal, Assam, Bihar, MP, Maharashtra, AP, Karnataka)

  Ssp. wightii (Benn. & R. Br.) Friis & Wilmot-Dear var. wightii Syn: P. caudata Benn.; P. scabra Wight (Orissa, TN,  Karnataka, Kerala, AP, Tamil Nadu, Sri  Lanka)

  Ssp. wightii var. gracilis (Miq.) Friis & Wilmot-Dear Syn: P. aspera Wight; P. meeboldii Smith (Kerala, Tamil Nadu , Karnataka)
Pouzolzia sanguinea (Blume) Merrill var. sanguinea Syn: P. viminea (Wedd.) Wedd.; P. sanguinea var. nepalensis (Wedd.) Hara (UP, Uttranchal, Nepal, Sikkim, AP, Manipur)  
P. sanguinea  var. fulgens (Wedd.) Hara (UP, Nepal, Sikkim, AP, Manipur)

P. zeylanica (L.) Benn. & R. Br. var. zeylanica syn: P. auriculata Wight; P. indica L. ; P. indica var. alienata; P. indica var. angustifolia Wedd.; P. indica var. tetraptera Wedd.; P. indica var. diffusa Hook.f. ; P. indica var. microphylla Hook.f.; P. tuberosa Wight; P. vesicaria Wight  (Himachal, Kashmir, UP, Uttranchal, W. Bengal, MP, Tripura, Bihar, Orissa, Mar., AP, Karnataka, Kerala, Tamil Nadu)

Before we fix the names of plants in our database perhaps an important decision is needed. In Flora of China (published 2003) and The Plant List the species under Pouzolzia are split under two genera
Gonostegia: Leaf blade 3-veined from base; Male buds truncate, perianth with annular, often villous, crown formed from
transverse crests of lobes.
Pouzolzia: Leaf blade with at least 2 major lateral veins arising clearly above base; Male flowers without this combination of characters
This won’t make any change in the key except that names of taxa will have to be changed.
The important question is do we treat them under single genus (as Old world revision in Nordic Journal of Botany, 2006 is more recent) or treat them as two distinct genera following Flora of China and The Plant List.

Is there any supporting literature for the classification in which species of Pouzolzia are kept under two genus?
If not, the recent classification based on Noradic Journal of Botany would be ideal, I think.

Binomial Habit Notes Ref. Distrib.
Pouzolzia
auriculata Wight (Syn. of Pouzolzia zeylanica)		 Herb Plains, Dry
Deciduous Forests		 Flora of Tamil
Nadu, VOL. II, 1987		 All districts
Pouzolzia bennettiana Wight var. acuta (Wight) Fischer Herb Western
Ghats, Evergreen Forests		 Flora
of Tamil Nadu, VOL. II, 1987		 Nilgiri
Pouzolzia bennettiana Wight var. bennettiana (Syn. of Pouzolzia hirta) Herb Western
Ghats & Eastern Ghats, Evergreen Forests		 Flora
of Tamil Nadu, VOL. II, 1987; Matthew 1983		 Coimbatore,
Dharmapuri, Dindigul,  Namakkal, Nilgiri, Salem, Theni, Tirunelveli, Viluppuram
Pouzolzia bennettiana Wight var. gardneri (Wight) Hook.f. Shrub Western
Ghats, Evergreen Forests		 Flora
of Tamil Nadu, VOL. II, 1987		 Dindigul,
Nilgiri
Pouzolzia bennettiana Wight var. macrophylla Hook.f. Herb Western
Ghats, Evergreen Forests		 Flora
of Tamil Nadu, VOL. II, 1987		 Coimbatore,
Tirunelveli
Pouzolzia bennettiana Wight var. mysorensis (Wight) Hook.f. Herb Western
Ghats, Evergreen Forests		 Flora
of Tamil Nadu, VOL. II, 1987		 Coimbatore,
Nilgiri
Pouzolzia bennettiana Wight var. ovalifolia (Wight) Hook.f. Herb Western
Ghats, Evergreen Forests		 Flora
of Tamil Nadu, VOL. II, 1987; Gamble & Fischer 1957		 Dindigul,
Nilgiri, Theni
Pouzolzia bennettiana Wight var. quadrialata (Wight) Hook.f. Herb Western
Ghats, Evergreen Forests		 Flora
of Tamil Nadu, VOL. II, 1987		 Nilgiri
Pouzolzia bennettiana Wight var. tomentosa (Wight) Hook.f. Herb Western
Ghats, Evergreen Forests		 Flora
of Tamil Nadu, VOL. II, 1987; Gamble & Fischer 1957		 Dindigul,
Nilgiri, Tirunelveli
Pouzolzia cymosa Wight Herb Western
Ghats & Eastern Ghats, Evergreen Forests		 Flora
of Tamil Nadu, VOL. II, 1987; Gamble & Fischer 1957		 Coimbatore,
Namakkal, Nilgiri, Salem
Pouzolzia hirta (Blume) hassk. Herb Western
Ghats, Evergreen Forests		 Flora
of Tamil Nadu, VOL. II, 1987		 Coimbatore
Pouzolzia pentandra (Roxb.) Benn. Herb Western
Ghats, Evergreen Forests		 Flora
of Tamil Nadu, VOL. II, 1987; Gamble & Fischer 1957		 Coimbatore,
Nilgiri, Tirunelveli
Pouzolzia wightii Benn. var. caudata (Benn.) Fischer Herb Western
Ghats, Evergreen Plants		 Flora
of Tamil Nadu, VOL. II, 1987		 Theni,
Tirunelveli
Pouzolzia wightii Benn. var. lawsoniana Fischer Herb Western
Ghats, Evergreen Plants		 Flora
of Tamil Nadu, VOL. II, 1987; Gamble & Fischer 1957		 Coimbatore, Dindigul, Nilgiri,  Salem, Theni
Pouzolzia wightii Benn. var. nilghirensis (Wight) Hook.f Herb Western
Ghats, Evergreen Plants		 Flora
of Tamil Nadu, VOL. II, 1987		 Nilgiri,
Theni
Pouzolzia wightii Benn. var. scabra (Wight) Fischer Herb Western
Ghats & Eastern Ghats		 Flora
of Tamil Nadu, VOL. II, 1987; Matthew 1983		 Coimbatore,
Dharmapuri, Dindigul, Nilgiri, Salem, Virudhu nagar
Pouzolzia wightii Benn. var. wallichiana Hook.f. Herb Western
Ghats, Evergreen Plants		 Flora
of Tamil Nadu, VOL. II, 1987; Hook.f. 1888, Gamble & Fischer 1957		 Coimbatore
Pouzolzia wightii Benn. var. wightii is a synonym of Pouzolzia pentandra var. wightii (Benn. & Br.) Friis & Wilmot-Dear Herb Western
Ghats & Eastern Ghats		 Flora
of Tamil Nadu, VOL. II, 1987; Gamble & Fischer 1957		 Coimbatore,
Namakkal, Nilgiri,  Salem,  Theni,
Tirunelveli, Virudhu nagar
Pouzolzia zeylanica (L.) Benn. Herb Plains
to Low Altitude, Moist Localities		 Flora
of Tamil Nadu, VOL. II, 1987		 All
districts
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Pouzolzia calophylla W. T. Wang & C. J. Chen (Syn: P. sanguinea (Blume) Merrill var. fulgens (Weddell) Hara)
Gonostegia hirta (Blume) Miquel (Syn: Pouzolzia hirta (Blume) Hasskarl)
Gonostegia pentandra (Roxburgh) Miquel (Syn: P. pentandra (Roxburgh) Bennett)
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Botanical name Synonyms Family Common name
Pouzolzia zeylanica Pouzolzia indica, Parietaria zeylanica Urticaceae Graceful Pouzolz’s Bush
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An Excursion Flora of Central Tamilnadu, India By K. M. Matthew (1995)- Details with keys-
Pouzolzia auriculata Wight (Syn. of Pouzolzia zeylanica)
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Forest Plants of Eastern India By Amal Bhusan Chaudhuri (1993)- Brief details-
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Flora of Ranga Reddi District Andhra Pradesh, India By T. Pullaiah, M. Silar Mohammed (2000)- Details-
Pouzolzia zeylanica
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Flora of Guntur District, Andhra Pradesh, India (2000)- Details-
Pouzolzia auriculata Wight (Syn. of Pouzolzia zeylanica)
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Pouzolzia‎ (Urticaceae) : 2 posts by 1 author.

I have updated eFI (efloraofindia) page on Pouzolzia (Pl. click).

Attempts have been made to incorporate most of the species available in India & nearby areas with details & keys directly or through links as far as possible. It’s quite possible that there may be some discrepancy in the accepted names & synonyms taken from other links.

Species discussed so far in efloraofindia are given at the bottom of the page in the form of links against Subpages. On clicking them one can see all the details.

If someone can provide complete list of Indian species with source references it will be wonderful.
Any comments/ corrections are welcome.

First portion of listing of all species with keys has been done earlier by … 

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Pl. go through Pouzolzia page (Urticaceae) with images of species in efloraofindia (done by me).

If you find any mis-identification, pl. let us know.
If anybody can send images of other species of this genera (for incorporation in the website), it will be really nice. Also, if anybody is interested to take up the activity of inserting images on efloraofindia pages from efloraofindia posts, pl. let us know.