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Pakistan | Family List | Pakistan V. 206 | Cyperaceae | Cyperus

15a. Cyperus nutans subsp. eleusinoides (Kunth) T. Koyama, Gard. Bull. Singapore. 30: 136. 1977; Kukkonen, l.c.

C. eleusinoides Kunth, Enum. Pl. 2: 39. 1837; C.B.Clarke, l.c. 608; R.R.Stewart, l.c. 88; C. nutans Vahl var. eleusinoides (Kunth) Haines, Bot. Bihar Orissa 5: 898. 1924; Lecomte, Fl. Indo-Chine 7: Fig. 6, 7-11. 1912. K.M. Matthew, Fl. Tamilnadu Carnatic 4: pl. 641. 1988.

Characteristic for subsp. eleusinoides is a narrow anthelodium (not wider than long as in subsp. nutans), primary branches erect (more spreading), spikes suberect (more spreading), glumes rather closely imbricating (more lax in subsp. nutans), glumes with mid-nerve ending into mucro, c. 0.3 mm (obtuse or mucronate).

Fl. Per.: August-October.

Type: "India orientalis", Wallich 3446B (K!; Wallich 3346 in Kunth l.c.).

Streams, canal banks; Distribution: Tropical Africa, India, Sri Lanka, NE Australia, Malesia, northwards to S China; in Taiwan acc. Kükenthal (1935), but Koyama (Fl. Taiwan 5, 1979) records C. nutans subsp. prolixus (Kük.) T. Koyama.

In our area occurs only. Taxonomic instability is pointed out by Kern (1974), who accepts C. nutans subsp. eleusinoides at varietal level only and considers C. nutans subsp. prolixus (Kükenth.) T. Koyama as representing a depauperate var. nutans.


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