Pouzolzia species;
 
 
 
 

Poulzolzia species in India: There are at least three four species of Pouzolzia in our database not identified conclusively. Could you kindly share the key of Old World species (or the whole paper if in electronic form) from this publication:
The Old World species of Pouzolzia (Urticaceae, tribus Boehmerieae).
A taxonomic revision- C. M. Wilmot- Dear and I. Friis: Nor. J. Bot. 24 (1): 2006*


Thanks a lot … It should be really very useful


attachment is not in group mail. Pl. forward it on the group.


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.

Pouzolzia sanguinea (Blume) Merrill var. sanguinea (UP, Uttranchal, Nepal, Sikkim, AP, Manipur)

Syn: P. viminea (Wedd.) Wedd.

P. sanguinea var. fulgens (Wedd.) Hara (UP, Nepal, Sikkim, AP, Manipur)

P. zeylanica (L.) Benn. & R. Br. var. zeylanica (Himachal, Kashmir, UP, Uttranchal, W. Bengal, MP, Tripura, Bihar, Orissa, Mar., AP, Karnataka, Kerala, Tamil Nadu)

syn: P. auriculata Wight; P. indica L. ; P. indica var. alienata; P. indica var.angustifolia Wedd.; P.

indica var. tetrapteraWedd.; P. indica var. diffusa Hook.f. ; P. indica var. microphylla Hook.f.;P.

tuberosa Wight; P. vesicaria Wight

P. cymosa Wight (Tamil Nadu)

P. hirta (L.) Hassk. Var. hirta (UP, Himachal, E. Himal, Nepal, Sikkim, Bhutan, W. Bengal, Nagaland, Bihar, Orissa, AP, Kerala, Tamil Nadu, Karnataka, Sri Lanka)

Syn: P. bennettiana Wight; P. integrifolia Dalz.;

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

Syn: P. parvifolia Wight.)

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 (Orissa, TN, Karnataka, Kerala, AP, Tamil Nadu, Sri Lanka)

Syn: P. caudata Benn.; P. scabra Wight

Ssp. wightii var. gracilis (Miq.) Friis & Wilmot-Dear (Kerala, Tamil Nadu , Karnataka)

Syn: P. aspera Wight; P. meeboldii Smith

A 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 1-3cm 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. hirtavar. 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. wightii var. gracilis

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. pentandrasubsp. pentandra

8b. Normal leaves either longer than 9 cm or broader than 2 cm  or both, ovate or elliptic ovate, usually acuminate……….P. pentandrasubsp. wightii var. wightii


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.


 
 
 

Leave a Reply

Your email address will not be published.