Carex bulbostylis

Mackenzie

Bull. Torrey Bot. Club 42: 617. 1915.

IllustratedEndemic
Synonyms: Carex amphibola var. globosa (L. H. Bailey) L. H. Bailey Carex grisea var. globosa L. H. Bailey
Treatment appears in FNA Volume 23. Treatment on page 454. Mentioned on page 450, 453, 455, 460.

Plants densely cespitose; rhizome internodes 1.6–2.2 mm thick. Culms strongly purple-red to 3–7.4 cm high at base, 10–65 cm. Leaves: sheaths glabrous; blades green, widest blades 2.2–3.5 (–3.9) mm wide, smooth abaxially. Inflorescences 0.31–0.94 of culm height; peduncles of lateral spikes barely scaberulous or smooth; peduncles of terminal spikes 1.8–28 mm, usually slightly exceeding lateral spikes; proximal bract sheaths tight, abaxially glabrous, sheath front convex, elongated 0.3–1.1 (–1.7) mm beyond apex; ligules 0.4–2.2 mm; distal bract usually much exceeding terminal spike. Spikes 4–5, widely separate or distal 2–3 spikes overlapping; lateral spikes pistillate, with (1–) 3–9 (–11) perigynia, 4–19 × 5.1–8.2 (–10.2) mm, ratio of spike length (in mm) to flower number = 1.4–1.9; terminal spikes (7–) 10–29 × 1.1–2.1 (–3.1) mm. Pistillate scales 2.8–5.4 × 1.7–2.5 mm, margins whitish, entire, apex with awn 0.8–2.6 mm. Staminate scales 3.6–5 × 1–1.8 mm. Anthers 2.9–3.7 mm. Perigynia distichously imbricate, 51–67-veined, inflated, unwrinkled, oblong-obovoid, orbicular or suborbicular in cross-section, 3.6–4.4 × (1.8–) 2–2.5 (–2.8) mm, 1.6–2 (–2.1) times as long as wide, dull, base very gradually tapered, apex abruptly contracted; beak straight, 0–0.2 (–0.3) mm. Achenes obovoid, 2.6–3.3 × 1.6–2.1 mm, loosely enveloped by perigynia; stipe straight, 0.3–0.7 mm; beak straight, 0.05–0.3 mm.


Phenology: Fruiting spring.
Habitat: Mesic deciduous forests, on flood plains and low on slopes just above flood plains, usually in calcium-rich loams and clay-loams
Elevation: 30–300 m

Distribution

V23 835-distribution-map.jpg

Ark., La., Miss., Okla., Tenn., Tex.

Discussion

Carex bulbostylis is common within much of its rather narrow range. It often occurs with C. amphibola and C. planispicata.

Selected References

None.

Lower Taxa

None.
... more about "Carex bulbostylis"
0.26 cm2.6 mm <br />0.0026 m <br /> (0.33 cm3.3 mm <br />0.0033 m <br />) +
smaller +
1.6mm;2.1mm +
0.29 cm2.9 mm <br />0.0029 m <br /> (0.37 cm3.7 mm <br />0.0037 m <br />) +
Robert F. C. Naczi +  and Charles T. Bryson +
Mackenzie +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.26 cm2.6 mm <br />0.0026 m <br />) +
shortened +
tapered +
Griseae +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
straight +
excurved +
0.005 cm0.05 mm <br />5.0e-5 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
m--shaped +
0mm;20mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.28 cm2.8 mm <br />0.0028 m <br />) +
2mm +  and 2.5mm +
purple-red +
3 cm30 mm <br />0.03 m <br /> (?) +  and 7.4 cm74 mm <br />0.074 m <br /> (?) +
round +  and trigonous +
10 cm100 mm <br />0.1 m <br /> (65 cm650 mm <br />0.65 m <br />) +
Ark. +, La. +, Miss. +, Okla. +, Tenn. +  and Tex. +
30–300 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Mesic deciduous forests, on flood plains and low on slopes just above flood plains, usually in calcium-rich loams and clay-loams +
0.31 +  and 0.94 +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
with (1-)3-6(-30) bristles and/or scales +
0.82 cm8.2 mm <br />0.0082 m <br /> (1.02 cm10.2 mm <br />0.0102 m <br />) +
yellowbrown +  and dark-brown +
0.36 cm3.6 mm <br />0.0036 m <br /> (0.44 cm4.4 mm <br />0.0044 m <br />) +
Fruiting spring. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
Bull. Torrey Bot. Club +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
adventitious +
staminate +  and pistillate +
0.36 cm3.6 mm <br />0.0036 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
basal +  and proximal +
2-keeled +
1mm;1.8mm +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.17 cm1.7 mm <br />0.0017 m <br />) +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.11 cm1.1 mm <br />0.0011 m <br />) +
cylindric +
Illustrated +  and Endemic +
overlapping +  and separate +
0.18 cm1.8 mm <br />0.0018 m <br /> (2.8 cm28 mm <br />0.028 m <br />) +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
straight +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (?) +  and 0.07 cm0.7 mm <br />7.0e-4 m <br /> (?) +
deciduous +
2-3(-4)-fid +
Carex amphibola var. globosa +  and Carex grisea var. globosa +
Carex bulbostylis +
Carex sect. Griseae +
species +
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.21 cm2.1 mm <br />0.0021 m <br /> (0.31 cm3.1 mm <br />0.0031 m <br />) +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.21 cm2.1 mm <br />0.0021 m <br />) +
plant +  and cespitose +
2.2mm +  and 3.5mm +