Marsilea crenata C.Presl
Marsilea crenata C.Presl, Rel. Haenk. 1: 84, t. 12, f. 13. 1825; Holttum, Rev. Fl. Malaya ed. 1, 2: 619. 1955 [‘1954’]; Holttum, Dansk Bot. Ark. 20: 35. 1961; Tagawa & K.Iwats., SouthE. Asian Stud. 5: 112. 1967; Tagawa & K.Iwats., Fl. Thailand 3: 600, f. 60.1–60.3. 1989; Boonkerd & Pollawatn, Pterid. Thailand: 97, 115. 2000; Newman et al., Checkl. Vasc. Pl. Lao PDR: 28. 2007.
Marsilea minuta auct. non L.: Tardieu & C.Chr., Fl. Indo-Chine 7(2): 30. 1939; Newman et al., Checkl. Vasc. Pl. Lao PDR: 28. 2007.
Marsilea quadrifolia auct. non L.: Tardieu & C.Chr., Fl. Indo-Chine 7(2): 30. 1939; Newman et al., Checkl. Vasc. Pl. Lao PDR: 28. 2007; Dy Phon, Dictionary of Plants used in Cambodia: 430. 2000.
Marsilea sp. aff. M. polycarpa Hook. & Grev.: Holttum, Dansk Bot. Ark. 20: 35. 1961.
Rhizome slender, long creeping, irregularly branching, bearing pale brown hairs. Stipes rather close, green, stramineous or pale brown, darker towards base, 2–3 cm long when exposed, or 6–18 cm long in immersed plants, hairy or glabrescent. Leaflets fan-shaped, round and subentire to undulate at apex, broadly cuneate at base, 0.5–2 cm both in length and in breadth, glabrous, or hairy at margin when young. Sporocarps one to several on short stalks placed at base of stipes, oblong, 2–5 mm long, covered with caducous hairs.
Distribution in Thailand
NORTHERN: Chiang Mai, Phitsanulok; NORTH-EASTERN: Phetchabun, Khon Kaen; EASTERN: Chaiyaphum; SOUTH-WESTERN: Kanchanaburi; CENTRAL: Bangkok; PENINSULAR: Krabi.
Distribution in Laos
Distribution in Cambodia
Kompong Cham, Siem Reap.
Old World Tropics and Subtropics.
In paddy fields, in grooves, in streamlets, in ponds or in marshy places, usually in open sunny places, rather common throughout the country at low or medium altitudes, lower than 1000 m.
IUCN Conservation Assessment
Least Concern (LC) as listed on the IUCN Red List at http://www.iucnredlist.org/apps/redlist/details/168620/0.
Marsilea is in great need of critical revision. In Thailand only one species was recognised in the Flora of Thailand, namely Marsilea crenata C.Presl. However, in various works from Cambodia and Laos three species have been recognised, Marsilea minuta L., M. quadrifolia L. and M. crenata. This material is very variable and several specimens identified under the first two names are sterile and indeterminable. In the material that is determinable we can identify only one species throughout Thailand, Laos and Cambodia, which is very variable in size. We refer all of this material to Marsilea crenata pending a critical revision of the genus in Asia. Young shoots can be eaten raw.
Voucher specimens - Laos
Thorel s.n. [P01435582], Champasak (P); Tixier s.n. [P01435606], Vientiane, Chinaimo [sterile specimen] (P).
Voucher specimens - Cambodia
For sale in market
For sale in market for eating
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