Eranthemum

Eranthemum capense L. (India (E- & peninsular India), Sri Lanka, Myanmar [Burma] (Magway) as per CoL)

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Eranthemum pubescens Roth (W. India as per POWO) (Images by Alka Khare (Inserted by J.M.Garg))

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Eranthemum pulchellum Andrews Images by Gurcharan Singh 

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Eranthemum purpurascens Wight ex Nees (Images by Gurcharan Singh & Dinesh Valke (Inserted by J.M.Garg))

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Eranthemum roseum (Vahl) R.Br. (Images by Dinesh Valke & Alka Khare (Inserted by J.M.Garg))

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Eranthemum strictum Colebr. ex Roxb. (Assam to Bangladesh: Assam, Bangladesh, Myanmar as per POWO)


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Pseuderanthemum carruthersii (Seem.) Guillaumin (Images by Gurcharan Singh (Inserted by J.M.Garg))

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Pseuderanthemum crenulatum (Wallich ex Lindley) Radl­kofer (Images by Aarti Khale (Identified by Nidhan Singh & Tanay Bose), Siva (Identified by Aarti Khale) & Alka Khare (Inserted by J.M.Garg))

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Pseuderanthemum latifolium (Vahl) B. Hansen (Images by Anurag N Sharma & Dinesh Valke  (Inserted by J.M.Garg))

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Pseuderanthemum laxiflorum (A. Gray) F.T. Hubb. ex L.H. Bailey (Images by Surajit Koley, Alka Khare, Dinesh Valke & Aarti Khale (Inserted by J.M.Garg))

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x Ruttyruspolia  ‘Phyllis van Heerden’ A.Meeuse & de Wet  ? (Images by Ranjit Singh Ahluwalia (Identified by Suarjit Koley) (Inserted by J.M.Garg))

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Eranthemum L. specis in India
 
Eranthemum capense L.
Eranthemum ciliatum (Craib) Benoist
Eranthemum cinnabarinum Wall. (synonym of Pseuderanthemum cinnabarinum (Wall.) Radlk.
Eranthemum erythrochilum J.R.I.Wood
Eranthemum griffithii (T.Anderson) Bremek. & Nann.-Bremek.
Eranthemum macrophyllum Wall. ex Nees
Eranthemum pubescens Roth
Eranthemum pulchellum Andrews
Eranthemum purpurascens Wight ex Nees
Eranthemum roseum (Vahl) R.Br. ex Roem. & Schult.
Eranthemum scabrum Wall. ex T.Anderson (synonym of Eranthemum pulchellum Andrews) 
Eranthemum splendens (T.Anderson) Bremek. & Nann.-Bremek.
Eranthemum strictum Colebr. ex Roxb.
Eranthemum suffruticosum Roxb.
Eranthemum tetragonum Wall. ex Nees
Eranthemum tubiflorum (T.Anderson) Radlk. ex Lindau
Eranthemum wattii (Bedd.) Stapf 

References
Karthikeyan, S., Sanjappa, M. and Moorthi, S. 2009. Flowering plants of India Dicotyledons volume 1 (Acanthaceae – Avicenniaceae). BSI, Kolkata. pp.15-17.
Efloraofindia 2007onwards. Eranthemum. Accessed at  /species/a—l/a/acanthaceae/eranthemum on 2-7-2020

Bracts white with green nerves
Bracts elliptic, cuspidate, glabrous and spikes upto 7.5 cm…… E. pulchellum Andr.
Bracts obovate, mucronate, strigose and spikes longer than 7.5 cm…. E. roseum (Vahl.) R. Br.
Bracts green
The bracts many nerved, white ciliate on margins…. E. purpurascens Nees
The bracts few nerved, viscous hairy……. E. capens L. var. concanense (T. And. C. B. Cl.) Sant.
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As per efi page :

Keys from Dr. Almeida’s flora for Eranthemum L. Vol IV, A pg: 36:

1. Flowers reddish -pink——-E. cinnabarinum
1. Flowers blue——–2
   2. Bracts densely pubescent——–E. pubescens
   2. Bracts glabrous or faintly hairy——3
     3. Bracts white with green veins, obovate, obtuse, with a short reflexed mucro—–4
       4. Plants with many erect branches springing from a common base——-E. wattii
       4. Plants with single stem, branched above, not in clumps——–5
          5. Flowers 3-4 cm across —- E. roseum
          5. Flowers upto 2.5 cm across —- E. roseum var. parviflorum
    3. Bracts green, elliptic, ovate, acuminate ——6
             6. Flowers in dense, usually solitary, uninterrupted spikes; bracts exceeding 2 cm long —– E. purpurascens
             6. Flowers in interrupted usually paniculate spikes; bracts less than 1 cm long —– 7
                 7. Leaves elliptic—— E. fastigiatum (is a synonym of Eranthemum capense L.)
                 7. Leaves ovate——E. pulchellum
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Botanical name Synonyms Family Common name
Eranthemum capense var. concanense Acanthaceae Konkan Eranthemum
Eranthemum pulchellum Eranthemum nervosum, Justicia nervosa, Daedalacanthus nervosus Acanthaceae Blue Sage
Eranthemum purpurascens Daedalacanthus purpurascens Acanthaceae Purple Eranthemum
Eranthemum roseum Acanthaceae Rosy Eranthemum
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Eranthemum pulchellum Andrews (Subtropical Himalaya (Punjab to Bhutan), Burma, Indo-China, W. China)
Eranthemum purpurascens Nees (Tropical Himalaya, India)
Eranthemum splendens (T. Anderson) Siebert & Voss (Subtropical Himalaya (Nepal, Sikkim))
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Species with description & keys from Flora of Pakistan (Distribution):
Eranthemum pulchelum Andrews (A native of Indo-Pakistan subcontinent; introduced in gardens elsewhere)
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Floriculture in India By Gurcharan Singh Randhawa, Amitabha Mukhopadhyay (1986)- Brief details-
Eranthemum albomarginatum B.S.Williams,  
Pseuderanthemum atropurpureum (W. Bull) L.H. Bailey is a synonym of Pseuderanthemum carruthersii (Seem.) Guillaumin,
Eranthemum bicolor Schrank is a synonym of Eranthemum pulchellum Andrews,

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Eranthemum malaccense C.B.Clarke
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Eranthemum (Acanthaceae) : 1 post by 1 author.

I have updated eFI (efloraofindia) page on Eranthemum (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.

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Pl. go through ‎Eranthemum page 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.