Overview:
Critically Endangered | |
Name Status: Accepted Name. Latest taxonomic scrutiny: 15-Mar-2000
Herbs perennial, biennial, or annual, less often lianas, shrubs, or trees, usually bristly or scabrous-pubescent. Leaves simple, exstipulate, alternate, rarely opposite, entire or serrate at margin. Inflorescences often double scorpioid cymes, rarely solitary; bracts present or absent. Flowers bisexual, actinomorphic, rarely zygomorphic. Calyx usually 5-parted or lobed, mostly persistent. Corolla tubular, campanulate, rotate, funnelform, or salverform; tube appendages 5, rarely more, mostly trapeziform, rarely absent, sometimes a ring of hairs present; limb usually 5-parted; lobes overlapping, rarely twisted in bud. Stamens 5, inserted on corolla tube or rarely at throat, included or rarely exserted; anthers introrse, 2-loculed, usually dorsifixed at base, less often medifixed, dehiscence longitudinal. Nectaries at base of corolla tube or on disc below ovary. Ovary superior, 2-carpellate; locules 2 and each with 2 ovules, or 4 and each with 1 ovule; ovules nearly atropous, semianatropous, or anatropous. Style terminal or gynobasic, branched or not. Gynobase flat, fastigiate, or subulate. Fruit 1-4-seeded drupes or nutlets (mericarps) ; nutlets mostly dry, often ornamented with wings, prickles and/or glochids (stiff bristles with barbed or anchorlike tips) . Seeds vertical or oblique, coat membranous; embryo straight, less often curved; cotyledons flat, fleshy.
About 156 genera and 2500 species: temperate and tropical regions, centered in the Mediterranean region; 47 genera and 294 species in China, of which four genera and 156 species are endemic.[1]
Herbs perennial or annual, appressed strigose or villous, 20-100 cm tall. Leaves alternate, green, large, thin. Inflorescences rarely solitary, terminal, not branched or paniculate. Fruiting pedicel deflexed. Calyx 5-parted to base or nearly so; lobes enlarged in fruit, vertical to reflexed. Corolla blue, light blue, or light purple, rarely yellow or white, campanulate-rotate to campanulate-tubular; throat with appendages, rarely appendages obscure or absent; lobes 5, imbricate in bud, vertical or divaricate at anthesis. Stamens inserted on corolla, included; anthers orbicular, ovate to oblong. Style and stigma solitary, usually not exceeding nutlets. Gynobase short pyramidal, to 2-3 mm. Nutlets 4, all or some developed, turbinate to ovoid, triangular-ovoid and dorsally compressed, marginal rib with compressed triangular to lanceolate glochids.
About 45 species: mainly in temperate regions of the Northern Hemisphere, and Central and South America; three species in China.
Lian & Wang (Acta Phytotax. Sin. 18: 514-520. 1980; Fl. Reipubl. Popularis Sin. 64(2) : 116-151. 1989) argued that the differences between Eritrichium and Hackelia are insufficient to keep them as separate genera. However, the gynobase in Eritrichium is cushion-shaped, to 1 mm high, while in Hackelia it is distinctly conical and 2-3 mm high. It is likely that other species from China listed under Eritrichium will need to be transferred to Hackelia in the future.[2]
Habit: Forb/herb
North America
Duration: Perennial
There are approximately 99 species, subspecies, varieties, forms, and cultivars in this genus: H. deflexa americana · H. amethystima · H. amethystina (Amethyst Stickseed) · H. andicola · H. angustifolia · H. arida var. cusickii · H. bella (Greater Showy Stickseed) · H. besseyi (Bessey Stickseed) · H. bhutanica · H. brachytuba · H. brevicula (Poison Canyon Stickseed) · H. caerulescens · H. californica (California Stickseed) · H. ciliata (Okanogan Stickseed) · H. cinerea (Gray Stickseed) · H. costaricensis · H. cottonii · H. cronquistii (Cronquist's Stickseed) · H. cusickii (Cusick Stickseed) · H. davisii (Davis Stickseed) · H. deflexa (Nodding Stickseed) · H. deflexa var. americana · H. dielsii · H. difformis · H. diffusa (Spreading Stickseed) · H. diffusa var. arida · H. diffusa var. cottonii · H. diffusa var. diffusa · H. eastwoodae · H. eastwoodiae · H. echinocarya · H. elegans · H. floribunda (Davis Mountain Stickseed) · H. floribunda var. pinetorum · H. glochidiata · H. gracilenta (Colorado Stickseed) · H. guatemalensis · H. heliocarpa · H. hendersoni · H. hendersoni var. trachyphylla · H. hendersonii · H. hendersonii var. trachyphylla · H. hirsuta (New Mexico Stickseed) · H. hispida (Rough Stickseed) · H. hispida var. disjuncta · H. hispida var. hispida · H. ibapensis (Deep Creek Stickseed) · H. leonotis · H. leptophylla var. besseyi · H. leucantha · H. macrophylla · H. matsudairai · H. meeboldii · H. mexicana · H. micrantha (Blue Stickseed) · H. minima · H. mundula (Pink Stickseed) · H. murgabica · H. nelsonii · H. nervosa (Sierra Stickseed) · H. nipponica · H. obtusifolia · H. ophioba · H. ophiobia (Owyhee River Stickseed) · H. pamirica · H. parviflora · H. patens (Common Stickseed) · H. patens var. harrisonii · H. patens var. patens · H. patens var. semiglabrz · H. pinetorum (Livermore Stickseed) · H. pinetorum var. jonesii · H. pinetorum var. pinetorum · H. popovii · H. rattanii · H. revoluta · H. revoluta f. fiebrigii · H. revoluta f. ovatifolia · H. revoluta var. ovatifolia · H. roylei · H. scaberrima · H. scaberrima var. angustata · H. setosa (Bristly Stickseed) · H. sharsmithii (Sharsmith's Stickseed) · H. skutchii · H. standleyi · H. stewartii · H. stricta · H. strigosa · H. thompsoni · H. thymifolia · H. uncinata · H. ursina (Chihuahuan Stickseed) · H. ursina var. diaboli · H. ursina var. pustulata · H. ursina var. ursina · H. velutina (Velvet Stickseed) · H. venusta (Lesser Showy Stickseed) · H. virginiana (Beggar's-Lice)
Accessed through GBIF Data Portal February 28, 2008:
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