Commelinales and Zingiberales week : Commelinaceae- commelina benghalensis?

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Rashida Atthar

Feb 7, 2011, 2:50:48 AM2/7/11
Saw this commelina sp. in the forest of Mumbai in November 2010, is it C. benghalensis?
Commelina sp1.JPG
Commelina sp..JPG

tanay bose

Feb 7, 2011, 9:02:44 AM2/7/11
to Rashida Atthar,
Commelina forskaolii?
Tanay Bose
Research Assistant & Teaching Assistant.
Department of Botany.
University of British Columbia .
3529-6270 University Blvd.
Vancouver, B.C. V6T 1Z4 (Canada)
Phone: 778-323-4036 (Mobile)
           604-822-2019 (Lab)
           604-822-6089  (Fax)

Rashida Atthar

Feb 8, 2011, 12:10:32 AM2/8/11
to tanay bose,
Thanks Neha ji and Tanay.

Mayur Nandikar

Feb 8, 2011, 7:11:02 AM2/8/11
to Rashida Atthar,

Hello I m too confused because of the leaves of above posted plant. But my opinion is go with  Commelina paludosa rather than Commelina forskalaei.

Commelina paludosa Blume, Enum. Pl. Jav. 1: 2. 1827; Rao and Kammathy, JBNHS 59: 60, 1962.        

Type: Java. Blume 807. (Herb. Lugd. Bat. 899. 2285-488) 

Lectotype.Commelina obliqua Buch. –Ham. ex D. Don. Fl. Nepal. 45. 1825; Clarke In: Dc., Mon. Phan. 3: 178. 1881; Hook. f., Fl. Brit. India 6: 372. 1892; Cooke, Fl. Pres. Bombay 3: 372. 1906; Fischer In: Gamble, Fl. Pres. Madras, 1076. 1928, non Vahl, 1806. Commelina polyspatha Wight, Ic. t. 2066. 1853. 

         Erect-scrambling perennial herb. Stems often erect, simple or sometimes branched distally, to 1 m, glabrous or sparsely hispidulous. Leaves sessile; leaf sheath densely brown hispid at mouth and in a line on 1 side, sometimes either glabrous with only a few hairs at mouth or hirsute throughout; leaf blade lanceolate to ovate-lanceolate, 7--20 × 2--7 cm, glabrous on both surfaces or adaxially granular hairy and abaxially hirsute. Involucral bracts often 4--10, forming terminal heads, sessile, funnelform, c. 2 × 1.5--2 cm, glabrous, proximal margins connate, apex acute or shortly so. Cincinnus 1; peduncle c. 1.2 cm; flowers 1 to several, nearly included in involucral bracts; pedicels c. 7 mm, twisted. Sepals 3--6 mm, membranous. Petals blue, 4.5--8 mm. Capsule ovoid-globose, trigonous, c. 4 mm, 3-valved. Seeds 1 per valve, dark brown, ellipsoid, c. 3.5 mm, slightly flattened, finely reticulate; hilum linear-punctiform, embryotega lateral.

Flowering and Fruiting: August to February.

Distribution: C. paludosa is distributed in India, Sri Lanka, Burma and Tropical Africa (Faden, 2000).

Localities:  From forest borders of Dajipur, Borbet, Chandrapur (Maharashtra), Kankumbhi (Karnataka).

Ecology: It is common along forest margins. It prefers exposed or partially shady habitats.

Mr. Mayur D. Nandikar,
Research Student,
Department of Botany,
Shivaji University,

Rashida Atthar

Feb 8, 2011, 9:05:31 AM2/8/11
to Mayur Nandikar,
Ok, thanks Mayur ji for  all the details.

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