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.

"/10" is not declared as a valid unit of measurement for this property.

... 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 +
William J. Crins +
de Candolle +
shortened +
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 +
0mm;20mm +
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 />) +
0cm +  and 13.5cm +
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 +
0.21 cm2.1 mm <br />0.0021 m <br /> (0.39 cm3.9 mm <br />0.0039 m <br />) +
basal +  and proximal +
2-keeled +
1.4mm;2.4mm +
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 +