Description Dichelostemma capitatum

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dichelostemma capitatum subsp. capitatum variable ecotype. photographed northern sierra nevadas


dichelostemma capitatum herbaceous perennial growing underground corm height of as 60 cm. has 2–3 leaves 10–40 cm long. inflorescence head- or umbel-like, , dense. contains 2 15 flowers, have blue, blue-purple, pink-purple, or white perianth. flower tube 3–12 mm , narrowly cylindrical campanulate. flowers have 6 fertile stamens, notched, lanceolate, white, angled inward, reflexed @ tip, outer filaments wider @ base. has twisted , fleshy peduncle, set of membranous, petal-like stamen appendages around anthers, , angular black seeds. reproduces seed , vegetative means in form of cormlets. cormlets attached parent corm stolons , sessile, produced in axils of old leaf bases on mature corm. plants thrive in open disturbed environments, , common post-fire succession species in chaparral. flowering peaks in march.


dichelostemma capitatum occurs sea level 2,300 meters. inhabits wide variety of plant communities, including vernal pools, valley grassland, scrub, coniferous forests, , open woodlands. seems not colonize after fire seed, rather cormlets. after fire, plants exposed unshaded environments little brush competition, , vigorously flower in open environments increased soil nutrients.


grasslands have been burned may exhibit thousands of plants none have appeared in recent years. corms may sit decade or more , wait fire or other favorable environmental conditions before breaking ground. suppression of fire may cause increased shade , plant competition , decrease population numbers of dichelostemma capitatum.








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