Carex sabulosa

Turczaninow ex Kunth

Enum. Pl. 2: 432. 1837.

Illustrated
Synonyms: Carex leiophylla Mackenzie Carex sabulosa subsp. leiophylla (Mackenzie) A. E. Porsild
Treatment appears in FNA Volume 23. Treatment on page 407. Mentioned on page 402, 408.

Plants cespitose, long-creeping rhizomatous. Culms 25–35 cm, smooth. Leaves 2–3 mm wide, often circinate. Inflorescences: proximal bracts shorter than or exceeding inflorescences; spikes globose or elongate, 6–17 × 6–10 mm; proximal spikes sometimes erect, separate, short-pedunculate; distal spikes contiguous, overlapping, or erect, sessile or short-pendunculate, forming dense terminal cluster; lateral 1–2 (–4) spikes pistillate; terminal spike gynecandrous. Pistillate scales light to dark-brown or chestnut, distal margins broadly hyaline, lanceolate, equaling or, more commonly, exceeding and narrower than perigynia, midvein lighter colored than body, conspicuous, often raised, prominent, apex acute or mucronate. Perigynia ascending, light-brown, strongly veined, broadly elliptic, 4–5 × 2–3 mm, apex abruptly beaked, smooth or distally papillose; beak 0.6–0.8 mm, deeply, sharply bidentate, smooth or papillose. Achenes nearly filling body of perigynia.


Phenology: Fruiting Jun–Aug.
Habitat: Riverine sand exposures, dune fields
Elevation: 600–800 m

Distribution

V23 731-distribution-map.jpg

Yukon, Alaska, Asia (Kazakhstan), Asia (Mongolia), Asia (Russia)

Discussion

Carex sabulosa was first recognized in North America as C. leiophylla Mackenzie. M. Raymond (1965) reported their similarity and considered C. sabulosa and C. leiophylla synonymous. A. E. Porsild (1966), on the other hand, saw distinctions, hence the combination C. sabulosa subsp. leiophylla. Our material falls well within the variation of C. sabulosa from Asia. The nearest extraterritorial locality is on the lower Lena River, Yakutia (Sakha).

Selected References

None.

Lower Taxa

None.
... more about "Carex sabulosa"
trigonous +
smaller +
papillose +  and smooth +
David F. Murray +
Turczaninow ex Kunth +
shortened +
cuneate +  and more or less rounded +
papillose +  and smooth +
bidentate +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
v--shaped +
0mm;20mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
papillose +  and smooth +
red +  and purple +
round +  and trigonous +
25 cm250 mm <br />0.25 m <br /> (35 cm350 mm <br />0.35 m <br />) +
, +  and equaling +
short-pendunculate +  and sessile +
cluster +, overlapping +  and contiguous +
Yukon +, Alaska +, Asia (Kazakhstan) +, Asia (Mongolia) +  and Asia (Russia) +
600–800 m +
hypogynous +  and subtending +
biconvex +  and trigonous +
Riverine sand exposures, dune fields +
prophyllate +, pedunculate +  and pistillate +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
lighter colored +
prominent +, raised +  and conspicuous +
with (1-)3-6(-30) bristles and/or scales +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Fruiting Jun–Aug. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
scale-like;,;thread-like +
ladder-fibrillose +  and veined +
purple +, tinged red +  and dotted +
black without yellowbrown +  and brown +
adventitious +
light +  and dark-brown or chestnut +
basal +  and proximal +
2-keeled +
cylindric +
Illustrated +
0.6 cm6 mm <br />0.006 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
elongate;globose +
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
2 +  and 3 +
papillate +
deciduous +
2-3(-4)-fid +
Carex leiophylla +  and Carex sabulosa subsp. leiophylla +
Carex sabulosa +
Carex sect. Racemosae +
species +
pistillate +  and staminate +
plant +  and cespitose +