Carex hostiana

de Candolle

Cat. Pl. Hort. Monsp., 88. 1813.

Common names: Tawny sedge carex de Host
Illustrated
Synonyms: Carex fulvescens Mackenzie Carex hornschuchiana Hoppe Carex hostiana var. laurentiana (Fernald & Wiegand) Fernald & Wiegand
Treatment appears in FNA Volume 23. Treatment on page 524. Mentioned on page 521, 523.

Plants not cespitose. Culms straight, 25–60 cm. Leaves of flowering-stems shorter than stem, to 13.5 cm × 1.5–3.1 (–4.3) mm. Inflorescences: peduncles of staminate spikes 5–70 mm; bracts 90 × 0.7–2.2 mm; inner band of sheaths with brown, convex projection to 3.2 mm. Spikes: proximal pistillate spikes 1–3 (–4), distant, erect or ascending, usually conspicuously pedunculate, ovoid to short-cylindric, proximal 10–20 × 5–9.5 mm; terminal staminate spikes 10–33 × 1.6–4.2 mm. Scales: pistillate scales dark-brown, 2.1–3.9 × 1.4–2.4 mm, margins conspicuously white-hyaline; staminate scales with broad, white, hyaline margins. Anthers 2–3.6 mm. Perigynia ascending, yellowish, 3.1–5.5 × 1.2–2.1 mm, apex gradually narrowed into straight, serrulate beak; beak 0.7–1.6 mm. Achenes 1.5–2 × 1–1.5 mm.


Phenology: Fruiting Jul–Aug.
Habitat: Moist to wet, open fens and meadows, on lime-rich soils
Elevation: 0–500 m

Distribution

V23 979-distribution-map.jpg

St. Pierre and Miquelon, Nfld. and Labr., Que., Mass., Europe

Discussion

Carex hostiana was last collected in Massachusetts prior to 1836.

Selected References

None.

Lower Taxa

None.

"shortened" is not a number.

... more about "Carex hostiana"
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
trigonous +
smaller +
1mm;1.5mm +
0.2 cm2 mm <br />0.002 m <br /> (0.36 cm3.6 mm <br />0.0036 m <br />) +
, +  and contracted +
narrowed +
William J. Crins +
de Candolle +
tapering +  and rounded +
straight +
bidentate +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
v--shaped +  and septate-nodulose +
0 cm0 mm <br />0 m <br /> (2 cm20 mm <br />0.02 m <br />) +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
90 cm900 mm <br />0.9 m <br /> (?) +
ascending +  and appressed +
scale-like +  and leaflike +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
parallel +  and divergent +
terete +, rolled +  and plicate +
Tawny sedge +  and carex de Host +
straight +
round +  and trigonous +
25 cm250 mm <br />0.25 m <br /> (60 cm600 mm <br />0.6 m <br />) +
St. Pierre and Miquelon +, Nfld. and Labr. +, Que. +, Mass. +  and Europe +
0–500 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Moist to wet, open fens and meadows, on lime-rich soils +
prophyllate +  and pedunculate +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
0.31 cm3.1 mm <br />0.0031 m <br /> (0.43 cm4.3 mm <br />0.0043 m <br />) +
0 cm0 mm <br />0 m <br /> (?) +  and 13.5 cm135 mm <br />0.135 m <br /> (?) +
basal +  and cauline +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.31 cm3.1 mm <br />0.0031 m <br />) +
hyaline +, white +  and white-hyaline +
0.5 cm5 mm <br />0.005 m <br /> (7 cm70 mm <br />0.07 m <br />) +
with (1-)3-6(-30) bristles and/or scales +
0.31 cm3.1 mm <br />0.0031 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.21 cm2.1 mm <br />0.0021 m <br />) +
Fruiting Jul–Aug. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
rounded-trigonous +, ovoid +, , +  and obovoid +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
long-sheathing +  and leaflike +
cuspidate +  and acute +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.95 cm9.5 mm <br />0.0095 m <br />) +
Cat. Pl. Hort. Monsp., +
adventitious +
staminate +  and pistillate +
basal +  and proximal +
2-keeled +
0.14 cm1.4 mm <br />0.0014 m <br /> (0.24 cm2.4 mm <br />0.0024 m <br />) +
cylindric +
Illustrated +
pedunculate +, pistillate +  and staminate +
ascending +  and erect +
ovoid;short-cylindric +
1 +  and 3 +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +
2-3(-4)-fid +
Carex fulvescens +, Carex hornschuchiana +  and Carex hostiana var. laurentiana +
Carex hostiana +
Carex sect. Ceratocystis +
species +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.42 cm4.2 mm <br />0.0042 m <br />) +
0 cm0 mm <br />0 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
plant +  and not cespitose +