Contains 5 accepted taxa overall.
Characteristics
Classification
Citation
ERIOCAULON Linnaeus, Sp. Pl. 87. 1753.
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TYPE: Eriocaulon decangulare Linnaeus Lectotypified by Britton & A. Brown, Ill. Fl. N. U.S., ed. 2. 1: 454. 1913.
Species
| Scientific Name | Common Name | Herbarium Specimens | Status | Photos |
|---|---|---|---|---|
| Eriocaulon cinereum | Ashy Pipewort | |||
| Eriocaulon compressum | Flattened Pipewort | |||
| Eriocaulon decangulare var. decangulare | Common Ten-angled Pipewort | |||
| Eriocaulon ravenelii | Ravenel's Pipewort | |||
| Eriocaulon texense | Texas Hatpins |
Identification Key
1. Leaves to 40 cm long; fertile scape to 1 m long; heads (8)10-20 mm wide
2
1. Leaves to 15 cm long; fertile scape to 0.4 m long; heads 3-8(10) mm wide
3
2. Heads soft, easily flattened when pressed; sheath of scape usually longer than the longest leaves; involucral bracts gray, apex rounded or obtuse; receptacular bracteoles gray, apex acute; pistillate flower petals adaxially villous; club-shaped hairs of perianth with all cells mealy white
2. Heads hard, not flattening when pressed; sheath of scape usually shorter than the longest leaves; involucral bracts straw-colored, apex acute; receptacular bracteoles pale, apex narrowly acuminate; pistillate flower petals adaxially glabrescent; club-shaped hairs of perianth with terminal cells whitened and the basal cells transparent
3. Receptacle copiously pilose; some or most receptacular bracteoles and perianth parts with chalk white hairs
3. Receptacle glabrous or sparsely hairy; receptacular bracteoles and perianth glabrous or hairy, hairs club-shaped, clear or white
4
4. Perianth parts and receptacular bracteoles with glabrous or with few white hairs, the upper part of the head appearing gray; seeds conspicuously irregularly pale-reticulate, alveolae mainly rectangular
4. Perianth parts and receptacular bracteoles with copious white hairs, the upper part of the head appearing white; seeds obscurely or faintly reticulate
5
5. Involucral and receptacular bracts mostly white to stramineous, the lower part of the head appearing pale; seeds dark red-brown, ovoid or ellipsoid, 0.5–0.75 mm, faintly rectangular-reticulate, often papillate in lines
5. Involucral and receptacular bracts dark gray or blackish, the lower part of the head appearing dark; seeds brown, nearly round, 0.3 mm, obscurely reticulate, alveolae irregularly and horizontally rectangular
Genus Synonyms
| Synonym | Full Citation | Basionym | Type |
|---|---|---|---|
| No synonyms found. | |||