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Commelinales and Zingiberales week : Commelinaceae- commelina benghalensis?: Saw this commelina sp. in the forest of Mumbai in November 2010, is it C. benghalensis?


– 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.


 

 

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Commelina ? from Hooghly 22/7/12 SK:

Is this a Commelina paludosa ?
Species : UNKNOWN
Habit & Habitat : roadside herb, also on old wall, about 1.5 feet high, leaves about 15cm, bend upwards in bright light
Date : 13/6/12, 11/7/12
Place : Garalgacha (Hooghly)


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The plant in this thread is –

  • more than 2 feet tall, not 1.5 feet as i have stated earlier, stem erect, suberect, branched
  • leaves 10-15 cm x 3.5 cm
Commelina species available in the FoP & FoC are –
  1. Commelina albescens Hassk. = leaves much smaller = http://www.efloras.org/florataxon.aspx?flora_id=5&taxon_id=250064589 = REJECTED ?
  2. Commelina subulate Roth. = leaves much narrower = http://www.efloras.org/florataxon.aspx?flora_id=5&taxon_id=250064593 = REJECTED
  3. Commelina auriculata Blume, Enum. Pl. Javae = leaves smaller = http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=240001172 = REJECTED ?
  4. Commelina diffusa N. L. Burman = leaves smaller = http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=222000040 = REJECTED ?
  5. Commelina communis Linnaeus, = leaves smaller = http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=200027375 = REJECTED ?
  6. Commelina benghalensis Linn. – leaves smaller = http://www.efloras.org/florataxon.aspx?flora_id=5&taxon_id=222000036 and = http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=222000036 = REJECTED ?
  7. Commelina maculata Edgeworth = “…. Commelina maculata is very similar to C. paludosa from which it differs in having stems creeping proximally, numerous branched, slender, rooting at nodes; leaves smaller, 4–10 × 1.5–2.5 cm; and involucral bracts fewer and smaller, often only 2 or 3 forming heads…” = http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=240001173 = REJECTED ?
  8. Commelina undulata R. Brown, Prodr. 270. 1810. = leaves smaller = http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=240001175 = REJECTED ?
  9. Commelina suffruticosa Blume = leaves slighly smaller = “…. Only one Chinese specimen was seen by the present authors.” = http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=240001174 = REJECTED ?
  10. Commelina paludosa Blume, Enum. Pl. Javae. 1: 2. 1827. = http://www.efloras.org/florataxon.aspx?flora_id=5&taxon_id=200027376 and = http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=200027376
  11. an illustration = http://www.efloras.org/object_page.aspx?object_id=60409&flora_id=2
Attaching some more images, recorded on the 23rd & 26th, this month.
Please, at least confirm this is a Commelina species.
Attachments (8)


This plant seems to be Commelina paludosa


This in Commelina paludosa Blume


Attaching a new set from the same population at the same place, this time the flowers are fresh.


Yes It is Commelina paludosa.


Thank you very much for confirming the ID.

 

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sk2015sept05/05 – Commelina maculata Edgew. : 1 post by 1 author. Attachments (7)

This set is from my earlier thread, has been kept under C. paludosa Bl.
While BSI treats the taxon synonymous with C. maculata Edgew., FoC thinks two are different taxa http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=107770#KEY-1-6.
Not only that, Haines thought C. suffurticosa & C. kurzii should be similar looking.
We do not have C. paludosa Bl. in India (as per BSI checklist).


Of two specimen (spathe) I examined yesterday one had a single trigonal trilocular capsule while the other had two capsules, one trilocular and the other bilocular. A third spathe had one flattened element that might be its seed!

Attachments (1)


Possibly Commelina paludosa, common on the bank of Hooghly. 


 

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Commelina paludosa Blume ???? : 4 posts by 3 authors. Attachments (4)

Location:  Deurali, Dolkha, Nepal
Date: 6 September 2017
Elevation : 7700 ft.

Yes, For time being it appears to be!


References:

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