Commelina undulata

Commelinales and Zingiberales Week: UNID Commelinaceae from KAAS Satara Maharashtra Sept2009:
Please bear with its little larger size,
Place: Near School; enroute Kass Plateau, Satara Maharashtra,
Date: 25th September, 2009(morning: 9.15am)

– with the help of aggregate spathe character I can say this must be

Commelina kurzii Clarke, J. Linn. Soc. Bot. 11: 444. 1874; Hook. f., Fl. Brit. India 6: 373. 1892; Fischer In: Gamble, Fl. Pres. Madras, 1075. 1928; Rolla Rao & Kammathy in JBNHS 59: 61, t. 1 (A & D) 1962;Type:  India. C. longifolia Thw., Enum. Pl. Zeyl. 322. 1864; Rao & Verma, Bull. Bot. Surv. India 1974. Commelina erecta Linn., Sp. Pl. 41, 1753; Morton, In: J. Linn. Soc. Bot. 6: 183, 1967. Lakshminarsimhan in Sharma et al., Fl. Maharashtra (Monocot.) 151, 1996. C. paludosa Blume var. mathewii (C. B. Clarke) R. S. Rao & Kammathy In: Bull. Bot. Surv. India 3: 168. (1961) 1962. 
Herbs perennial. Stems erect or ascending, diffuse, numerous branched, to 60 cm, glabrous. Leaves sessile; leaf sheath usually ciliate; leaf blade lanceolate, 6–9 × 1.2–2.8 cm, glabrous or ± hirsute on both surfaces. Involucral bracts 2–4, in fascicles at apex of branches and opposite smaller leaves, sessile, funnelform, 2–2.5 cm, glabrous or somewhat hirsute, proximal margins partly connate (2–3 mm free), apex falcate-acuminate. Proximal branch of cincinni often abortive, sometimes with c. 2 cm long peduncle but without flowers, distal branch with peduncle to 1 cm and with several flowers; pedicels twisting. Sepals 3.5–4 mm, membranous, boat shaped. Paired petals pinkish blue (?) to 1 cm, odd petal membranous to 3 mm. Fertile stamens 3; staminodes 3, anthrode cruciform. Capsule subglobose, 3–4 mm, 2-3 locular, sometimes only single locule containing seed and dehiscent; posterior locule indehiscent. Seeds one per locule, brownish-black to grey, smooth with white farinose, a lighter brown concolorous material around the periphery, oblong, c. 4 mm, flat on one surface; hilum linear, curved embryotega lateral.
Flowering and fruiting: October to January.
Distribution: Commelina kurzii is common in tropical Oceania, but scattered in Asiatic countries like India, Indonesia, Philippines, etc.
Ecology: Humid Mountain slopes
Note:It varies widely, with plants erect or diffuse, glabrous or hairy, and capsule (1 or) 2- or 3-locular. The species is characterized by having apically falcate-acuminate involucral bracts only partly connate at the proximal margins, arising opposite the fascicled smaller leaves, and therefore resembling compound heads.Another thing is petal colour, in earlier relevant literature it described as pink, violet, lavender, etc. but species which I collected from few location is with white petals. There is no range in their colour, so it need to study meticulous.

Commelinaceae for identification 290812MK02:

it may Commelina kurzii

Many thanks …

Thanks a lot, …, for superb details and presentation, hardly seen before.

I guess C. undulata.  Images could not be enlarged to view properly.

Thank You, Sir ! But please help by pointing out characters in favor and against. Also I need some help on Image resizing ……… I have tried all tricks but I keep loosing details after resizing below 150 Kb and zooming in.

great study in photographs. i hope newer members would learn from these

You are quite right, it appears to be Commelina undulata (Syn. Commelina kurzii) before to confirm you please see whether the dorsal locule of the capsule is muricate (see picture below ).

For your kind attention, …
6 images.

Seems to Commelina undulata R.Br. 

This is beautiful, I never seen this petal colour in Indian Commelina kurzii. I believe will wait for capsules and seed before to conclude any. As I said earlier, there may be interesting to visit Nepal. Different colours altogether.

I am enclosing some more images !
8 very high res. images.

However, I could not find this species distribution for Nepal !

Yes, we will maintain it as Commelina kurzii at this occasion. As C. undulata and C. ensifolia were described originally from Australia and there is ambiguity between them.

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FOR VALIDATION :: Commelina undulata R.Br. :: Waghbil, Thane, Maharashtra :: Nov 15, 2008 · JUN23 DV74: 3 images.
Commelina undulata R.Br. … FOR VALIDATION
Waghbil, Thane, Maharashtra :: Nov 15, 2008 · 11:18 AM IST :: about 3 m (10 ft) asl

I guess, yes !

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Commelina undulata R.Br. :: Shirgaon, Palghar :: Feb 26, 2023 · JUN23 DV423: 2 images.

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References:

The Plant List Ver.1.1  WCSP  Flora of China (Commelina undulata R. Brown) Flowers of India  India Biodiversity Portal