Acanthaceae Fortnight: Dicliptera chinensis from Kud J & K -GSMAR11/12

[Gurcharan Singh]

Dicliptera chinensis (L.) Juss., Ann. Mus. Natl. Hist. Nat. 9: 268. 1807. 

syn: D. roxburghiana Nees.

The plant was photographed from Kud J & K.  

Herb differentiated by leaf ovate-elliptic, abaxially puberulent along veins, base decurrent onto petiole, apex shortly acuminate to acute; floweres in 1-4 flowered cymules, with 3-4 cymules per cyme, on 2-5 mm peduncles from upper leaf axils, bracts subulate to linear to oblanceolate to obovate, 3-7.5 × 0.3-1 mm; outer bracteoles elliptic to obovate, 5-13 × 3-8 mm, unequal, abaxially puberulent, 3-veined,; inner bracteoles linear, ca. 5 mm, abaxially hirsute, apex acuminate. Pedicel 0.5-3 mm, puberulent. Calyx ca. 5 mm; lobes linear, equal, margin hirsute, apex acuminate. Corolla pale purple, 1-1.2 cm, lip in lower position ovate, ca. 5 × 3 mm, apex entire; lip in upper position oblong, ca. 4 × 1.5 mm. filaments ca. 4 mm, style ca. 1.4 cm. Capsule broadly ellipsoid, ca. 6 mm. Seeds 2 mm.

Dr. Gurcharan Singh

Retired  Associate Professor
SGTB Khalsa College, University of Delhi, Delhi-110007
Res: 932 Anand Kunj, Vikas Puri, New Delhi-110018.
Phone: 011-25518297  Mob: 9810359089

http://www.gurcharanfamily.com/ 
http://people.du.ac.in/~singhg45/

[JM Garg]

On further examination and discussions at thread: Dicliptera bupleuroides Nees (accepted name) ??? , I feel it should be Dicliptera riparia Nees (syn: Dicliptera roxburghiana var. riparia (Nees) Benoist) as per distribution, specimens and references herein.

[Gurcharan Singh]

All three similar species are listed in FBI (under names D. riparia, D. roxburghiana and D. roxburghiana var. bupleuroides): Here is comparison of accepted names

D. riparia Nees is distributed in Pegu  and Tenassarim (Myanmar),FBI according to Flora China Nepal, Myanmar to Yunan: Lesves ovate, obtuse often emarginate bracts, bracteoles 6 mm, linear.

D. chinensis (L.) Juss. (Syn: D. roxburghiana Nees): Leaves ovate-elliptic, base cuneate to attenuate, decurrent on petiole, outer bracteoles 5-13 mm x 3-8 mm , less than twice as long as broad, corolla 10-12 mm long; Throughout India

D. bupleuroides Nees (Syn: D. roxburghiana var. bupleuroides (Nees) Clarke): leaves ovate, base cuneate; outer bracteoles 5-7 mm long, more than twice as long as broad; corolla 5 mm long.; Throughout India

When looking for specimens from Western Himalayas we have to be vigilant about size of corolla and relative length breadth ratio of outer bracteoles.

This is D. chinensis

[J.M. Garg]

Thanks, for pointing this out.
Yes, agree with your original id as per details at Dicliptera roxburghiana and Dicliptera roxburghiana var. bupleuroides

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With regards,
J.M.Garg

[Gurcharan Singh]

Thanks Garg ji.