Carex pityophila

Mackenzie

Bull. Torrey Bot. Club 40: 545. 1913.

Treatment appears in FNA Volume 23. Treatment on page 537. Mentioned on page 532, 533, 536.

Plants densely cespitose; rhizomes ascending, reddish-brown, 0–10 mm, stout. Culms 3–12 cm, strongly scabrous distally; bases (remnants of old leaves) weakly fibrous. Leaf-blades green, usually exceeding stems, 0.8–1.5 (–2.6) mm wide, herbaceous, glabrous abaxially, glabrous or slightly scabrous adaxially. Inflorescences with both staminate and pistillate spikes; peduncles of basal spikes erect, elongate, slender; peduncles of staminate spikes 4–6.9 mm; proximal nonbasal bracts leaflike, exceeding inflorescences. Spikes: proximal pistillate spikes 2–3 (basal spikes 1); cauline spikes overlapping or somewhat separated, with 1–3 perigynia; staminate spikes 4.8–5.7 (–8) × 0.7–1.5 mm. Scales: pistillate scales pale reddish-brown with white margins, ovate, 2.9–3.6 × 1.4–1.8 mm, equaling or shorter than perigynia, apex acute to acuminate; staminate scales ovate to lanceolate, 3.9–4.8 × 1.2–1.8 mm, apex acute to acuminate. Anthers 1.2–2.1 mm. Perigynia green to yellowish-brown, veinless, ellipsoid to ovoid, 3.3–4.4 × 1.4–1.6 mm; beak slightly bent, green to yellowish-brown, often reddish-brown at apex, 0.7–1.6 mm, smooth or weakly ciliate-serrulate, apical teeth 0.2–0.4 mm. Stigmas 3. Achenes brown, obovoid, obtusely trigonous in cross-section, 1.9–2.1 × 1.4–1.6 mm.


Phenology: Fruiting mid May–early Aug.
Habitat: Open or partly shaded, rocky and sandy sites along stream banks, in ponderosa and pinyon pine, aspen, and sagebrush-grass communities
Elevation: 2000–3700 m

Discussion

Carex pityophila can appear similar to depauperate specimens of C. rossii from high elevations and is closely related to C. geophila. Plants from the San Bernardino Mountains in southern California are similar to C. pityophila in habit, leaf morphology, and perigynia number per pistillate spike; their perigynia have more prominent veins, suggesting that they may be more closely related to C. globosa. All western montane taxa warrant much closer scrutiny.

Selected References

None.

Lower Taxa

None.
... more about "Carex pityophila"
0.19 cm1.9 mm <br />0.0019 m <br /> (0.21 cm2.1 mm <br />0.0021 m <br />) +
trigonous;obovoid +
1.4mm;1.6mm +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.21 cm2.1 mm <br />0.0021 m <br />) +
beaked +, awned +  and cuspidate +
glabrous +  and pubescent +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
William J. Crins +  and Jeff H. Rettig +
Mackenzie +
shortened +
rounded +  and tapering +
ciliate-serrulate +  and smooth +
straight +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
v--shaped +
2mm;4.5mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
separated +  and overlapping +
brown +  and red +
round +  and trigonous +
3 cm30 mm <br />0.03 m <br /> (12 cm120 mm <br />0.12 m <br />) +
Colo. +, N.Mex. +  and Utah. +
2000–3700 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Open or partly shaded, rocky and sandy sites along stream banks, in ponderosa and pinyon pine, aspen, and sagebrush-grass communities +
prophyllate +, pedunculate +, staminate +, , +  and pistillate +
scabrous +  and glabrous +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
with (1-)3-6(-30) bristles and/or scales +
green +  and yellowish-brown +
0.33 cm3.3 mm <br />0.0033 m <br /> (0.44 cm4.4 mm <br />0.0044 m <br />) +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.14 cm1.4 mm <br />0.0014 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
Fruiting mid May–early Aug. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
scale-like +  and filiform +
Bull. Torrey Bot. Club +
reddish-brown +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
adventitious +
staminate +  and pistillate +
pale reddish-brown +
0.39 cm3.9 mm <br />0.0039 m <br /> (0.48 cm4.8 mm <br />0.0048 m <br />) +
basal +  and proximal +
ovate;lanceolate +
1.2mm;1.8mm +
cylindric +
staminate +  and pistillate +
0.57 cm5.7 mm <br />0.0057 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.48 cm4.8 mm <br />0.0048 m <br /> (0.57 cm5.7 mm <br />0.0057 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.69 cm6.9 mm <br />0.0069 m <br />) +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +
2-3(-4)-fid +
Carex sect. Montanae +
Carex pityophila +
Carex sect. Acrocystis +
species +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
stoloniferous +  and rhizomatous +
plant +  and cespitose +