Overview
Herbs or subshrubs. Stem erect or ascending. Leaves opposite, petiolate, margin entire. Flowers clustered in cymose partial inflorescences, 1-3 in each cluster, hermaphroditic, partly accompanied by sterile ones. Bracts ovate, membranous, often spiny. Tepals 5, nearly equal, membranous. Stamens 5; anther 2-loculed, oblong; filaments connate into a short cup at base, alternating with dentate or lacerate staminodes. Ovary obovoid; ovule 1, pendulous from a long funicle; style filiform, persistent; stigm a capitulate. Utricles included in persistent perianth, globose, ellipsoid, or obovoid, membranous, indehiscent. Seeds oblong or ellipsoid.
About 27 species distributed in Asia, Pacific Islands, Africa, and North and South America; four species in China.[1]
Taxonomy
The Genus Cyathula is further organized into finer groupings including:
- Species: ZipcodeZoo has pages for 64 species, subspecies, varieties, forms, and cultivars in the Genus Cyathula: C. achyranthoides · C. achyranthoides var. densiflora · C. achyranthoides var. glabrescens · C. albida · C. alternifolia · C. angustifolia · C. biflora · C. braunii · C. capitata · C. ceylanica · C. cordifolia · C. coriacea · C. crispa · C. cylindrica · C. deserti · C. distorta · C. divulsa · C. echinulata · C. erinacea · C. fernando-poensis · C. geminata · C. geniculata · C. globosa · C. globulifera · C. hereroensis · C. hererpensis · C. humbertiana · C. kilimandscharica · C. lanceolata · C. lancifolia · C. lindaviana · C. madagascaricuais · C. mannii · C. merkeri · C. mollis · C. natalensis · C. obtusifolia · C. officinalis · C. orbiculata · C. orthacantha · C. orthacanthoides · C. paniculata · C. pedicellata · C. perrieriana · C. pobeguinii · C. polycephala · C. prostrata (Pastureweed) · C. prostrata var. achyranthodes · C. prostrata var. laxiflora · C. prostrata var. stenophylla · C. repens · C. sanguinolenta · C. schimperiana · C. semirosulata · C. sequax · C. spathulata · C. spathulifolia · C. sphaerocephala · C. strigosa · C. tomentosa · C. triuncinata · C. triuncinata var. managuensis · C. triuncinella · C. uncinulata
Footnotes
- bei xian shu "Cyathula". in Flora of China Vol. 5 Page 421. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org.
Sources
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