EcoFlora - Achyranthes

Achyranthes
Family: Amaranthaceae	FNA Gleason & Cronquist Resources Kenneth R. Robertson in Flora of North America (vol. 4) Herbs, perennial or annual. Stems erect to ascending. Leaves opposite, petiolate; blade elliptic, ovate to orbiculate, or broadly rhombate, margins entire. Inflorescences terminal and axillary, pedunculate, elongate, many-flowered, simple spikes or few-branched panicles; flowers crowded together at tips, becoming more widely spaced toward base. Flowers bisexual, often becoming deflexed with age; tepals 4 or 5, basally connate, without ornamentation, coriaceous, becoming indurate in fruit, ± glabrous; filaments basally connate into short tubes or cups; anthers 4-locular; pseudostaminodes 5; ovary obovoid or turbinate; ovule 1; style elongate; stigma 1, capitate. Utricles enclosed by and falling with indurate tepals, elliptic or cylindric, membranous, indehiscent. Seeds 1, inverted, obovoid or ovoid, smooth. The groups of plants referred to as Achyranthes and Alternanthera have been subject to considerable nomenclatural confusion, primarily because P. C. Standley (1915) designated Achyranthes repens Linnaeus as the lectotype species of Achyranthes. As a result, species that had been placed in Achyranthes were transferred to Centrostachys Wallich, and species that had been in Alternanthera were transferred to Achyranthes. A. A. Bullock (1957; see also R. Melville 1958) showed that Standley´s lectotypification was incorrect and that the type species of Achyranthes is Achyranthes aspera Linnaeus. The generic concepts of Achyranthes and Alternanthera then returned to those prior to 1915. Vascular plants of NE US and adjacent Canada Fls perfect; sep 4-5, distinct, erect, firm-chartaceous; stamens connate below to form a short tube with (4)5 alternating filaments and as many alternating sterile lobes; anthers tetrasporangiate and bilocular; style solitary, with a capitate stigma; ovule one; utricle membranous, indehiscent; herbs with opposite, petiolate, entire lvs and greenish fls in elongate, terminal and axillary spikes. 100, Old World. Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp. ©The New York Botanical Garden. All rights reserved. Used by permission.
Achyranthes aspera Map not Available Achyranthes atollensis Media not available Map not Available Achyranthes bettzichiana Media not available Map not Available Achyranthes bidentata Map not Available Achyranthes brasiliana Media not available Map not Available Achyranthes canescens Media not available Map not Available Achyranthes coynei Map not Available Achyranthes fasciculata Map not Available Achyranthes fauriei Map not Available Achyranthes ficoidea Map not Available Achyranthes indica Map not Available Achyranthes japonica Map not Available Achyranthes lanata Media not available Map not Available Achyranthes lappacea Media not available Map not Available Achyranthes leptostachya Map not Available Achyranthes margaretarum Map not Available Achyranthes maritima Map not Available Achyranthes mollis Media not available Map not Available Achyranthes muricata Media not available Map not Available Achyranthes mutica Map not Available Achyranthes nelsonii Map not Available Achyranthes nivea Media not available Map not Available Achyranthes nodosa Media not available Map not Available Achyranthes oblanceolata Media not available Map not Available Achyranthes ovata Media not available Map not Available Achyranthes pedicellata Media not available Map not Available Achyranthes philoxeroides Map not Available Achyranthes polystachia Media not available Map not Available Achyranthes portoricensis Media not available Map not Available Achyranthes ramosissima Map not Available Achyranthes rubro-lutea Media not available Map not Available Achyranthes rubrolutea Media not available Map not Available Achyranthes schinzii Media not available Map not Available Achyranthes schweinfurthii Media not available Map not Available Achyranthes sericea Media not available Map not Available Achyranthes sessilis Map not Available Achyranthes sicula Map not Available Achyranthes splendens Map not Available Achyranthes stellata Media not available Map not Available Achyranthes talbotii Media not available Map not Available Achyranthes tenuifolia Media not available Map not Available Achyranthes thonningii Media not available Map not Available Achyranthes villosa Media not available Map not Available Achyranthes viridis Media not available Map not Available Achyranthes welwitschii Media not available Map not Available Achyranthes winteri Media not available Map not Available