form and

K., Thoiba, Abstract, A. K. Pradeep & Roem., Tripogon, 2020, A revision of Tripogon (Poaceae: Chloridoideae) in India, Rheedea 30 (3), pp. 325-378 : 326

Growth form and habitat

The majority of Indian Tripogon species are caespitose, slender or stout, erect, annuals or perennials, a few species ( T. vellarianus Pradeep , T. bimucronatus Thoiba & Sunil , T. malabaricus Thoiba & Pradeep ) form well-developed or tussock forming rootstocks and much longer racemes, whereas species such as T. velliangiriensis Murug. & V.Balas. and T. wightii Hook. f. are sometimes stoloniferous. Tripogon pungens C.E.C.Fisch. is peculiar in having short, thick root stocks firmly attached to rock crevices. Tripogon generally thrive in a variety of habitats such as high altitude rocky outcrops (inselbergs), grasslands, and forest margins. The majority of species prefer wet rocky hillsides, steep granitic cliffs, road cuts and boulders along grasslands. Species such as T. capillatus and T. lisboae Stapf often occur on tree trunks in open places along margins of wet evergreen and moist deciduous forests. Tripogon jacquemontii Stapf is usually found on boulders in dry habitats and on walls of old forts, while T. polyanthus Naik & Patunkar prefers to grow on rocks along river side.

Culms

The culm nodes vary in number from 1–4. Leaves are arranged all along the culm or grouped at the base of the culms.