Trichophorum planifolium |
Trichophorum clintonii |
|
---|---|---|
bashful bulrush, bashful clubsedge |
Clinton's bulrush, Clinton's clubsedge, trichophore de Clinton |
|
Habit | Plants densely cespitose; rhizomes absent. | Plants densely cespitose; rhizomes absent. |
Culms | trigonous, 10–40 cm, scabrous proximal to inflorescence. |
trigonous, 7.5–36 cm, scabrous proximal to inflorescence. |
Leaves | basal sheaths brown; distal leaf sheaths concave at mouth; blades 10–400 × 0.8–2 mm, equaling or exceeding culms at flowering and fruiting. |
basal sheaths orange to dark brown; distal leaf sheaths truncate to concave at mouth; blades (6–)15–250 × 0.5–0.8(–1) mm, equaling or shorter than culms at flowering, much shorter than culms at fruiting. |
Inflorescences | spikelets 3–8-flowered, 4.1–5.2 × 1.5–2.1 mm; bracts equaling spikelets, 3.7–6 mm, apex awned, awn to 3 mm. |
spikelets 3–6-flowered, 3.4–5.3 × 1.3–2.5 mm; bracts shorter than to slightly exceeding spikelets, 3–6 mm, apex mucronate or awned, awn to 1.4 mm. |
Spikelets | scales orange-brown to dark brown, midribs excurrent, apex mucronate. |
scales orange-brown to dark brown, midribs not reaching apices in distal scales, apex obtuse. |
Flowers | perianth bristles 3–6, brown, terete, nearly equaling achenes, scabrous; anthers 1–1.5 mm. |
perianth bristles 3–6, pale brown, terete, equaling or shorter than achenes, scabrous; anthers 0.7–1.5 mm. |
Achenes | compressed trigonous, 1.5–2 × 0.7–1.1 mm. |
compressed trigonous, 1.5–2 × 1–1.2 mm. |
Trichophorum planifolium |
Trichophorum clintonii |
|
Phenology | Fruiting summer (Jun–Jul). | Fruiting late summer (May–Jul). |
Habitat | Mesic to dry hardwood forests, usually with oak component, often on hillsides | Open, dry to mesic prairies, meadows, riverbanks, rock outcrops, on lime-rich substrates |
Elevation | 50–900 m (200–3000 ft) | 10–900 m (0–3000 ft) |
Distribution |
CT; DC; DE; IL; MA; MD; MO; NJ; NY; OH; PA; RI; VA; VT; WV; ON
|
ME; MI; MN; NY; WI; AB; NB; ON; QC; SK
|
Source | FNA vol. 23, p. 31. | FNA vol. 23, p. 31. |
Parent taxa | Cyperaceae > Trichophorum | Cyperaceae > Trichophorum |
Sibling taxa | ||
Synonyms | Isolepis planifolia, Baeothryon planifolium, Baeothryon verecundum, Eleocharis planifolia, Scirpus planifolius, Scirpus verecundus | Scirpus clintonii, Scirpus planifolius var. brevifolius |
Name authority | (Sprengel) Palla: Oesterr. Bot. Z. 63: 402. (1913) | (A. Gray) S. G. Smith: Novon 5: 102. (1995) |
Web links |