Dauciform Roots in Carex atrofusca Schkuhr subsp. minor (Boott) T. Koyama (Cyperaceae) from the Manaslu Himalaya, Central Nepal

摘要

Dauciform roots are reported for Carex atrofusca Schkuhr subsp. minor (Boott) T. Koyama (Cyperaceae) collected from the Manaslu Himalaya, Central Nepal. This is the first report of dauciform roots in Cyperaceae from the Himalayas. Conical root clusters in Cyperaceae were first reported from the genus Carex in the Caucasus Mountains, Russia (Selivanov and Utemova 1969). A few years later Davies et al. (1973) found similar swollen lateral roots on14 species in four European Cyperaceae genera, Carex, Cladium, Kobresia, and Schoenus. Powell (1973) also found similar swollen roots in the New Zealand sedge, Schoenus and Uncinia. Lamont (1974) reported such swollen roots in the Australian sedge Cyathochaeta avenacea (R. Br.) Benth., and named them 'dauciform roots'.