The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

prickly sedge, star sedge

weak-veined sedge

Habit Plants cespitose, 10–90(135) cm tall. Plants cespitose; culms 10–83 cm long, smooth or more often papillose (at 20×) at mid-length, the fragile papillae like tiny pegs projecting at right angles to the culm on its edges.
Leaves

usually 0.7–3(3.8) mm wide.

1.4–3.8 mm wide.

Inflorescences

spikes separated or crowded, usually gynaecandrous, with perigynia widely spreading or reflexed at maturity;

lateral spikes 3–15.5 mm long; terminal spikes 5–24 mm long, often with a narrow male portion 2–16.5 mm long.

spikes (4)5–6(7) usually longer than wide, generally pale to straw-colored; smooth or rough in outline, usually gynaecandrous, sometimes male or female; lowest spike 9.5– 18 mm long, with 11–22 perigynia; terminal spike 9.5–16 mm long.

Perigynia

tapered gradually to the beak; (2.6)3–4.8 mm long, green to brown, veined or veinless on the ventral surface over the achene;

base swollen; pithy when mature;

beak 0.9–2 mm long, 33–60% of perigynium length.

3.7–5.3 mm long, green; whitish, or tan;

beak 1.5–2.2 mm long, 39–49% of perigynium length;

teeth 0–0.2(0.4) mm long;

stigmas 2.

Achenes

lenticular.

lenticular.

Female scales

inconspicuous; shorter than the mature achene.

2.9–4.4 mm; silvery white to gold, with green midvein, usually awned; awn to 1.1 mm long;

body about as long as or longer than the mature achene.

Anthers

1.3–1.8 mm long.

2n

=54.

Carex echinata

Carex infirminervia

Distribution
[WildflowerSearch map]
[BONAP county map]
[BONAP county map]
Discussion

Cosmopolitan. 2 subspecies.

Narrow-leaved Carex echinata is identified by its widely spreading, gradually tapering perigynia in star-like spikes.

Shaded to partially shaded riparian zones in mountains. 600–2000 m. BW, Casc, ECas, Sisk. CA, ID, NV, WA; north to British Columbia, northeast to MT. Native.

This is one of the “identical triplets,” distinguished by its relatively long beaks and short beak teeth. See discussion under C. bolanderi.

Source Flora of Oregon, volume 1, page 199
Barbara Wilson, Richard Brainerd, Nick Otting
Flora of Oregon, volume 1, page 206
Barbara Wilson, Richard Brainerd, Nick Otting
Sibling taxa
C. abrupta, C. agastachys, C. amplifolia, C. angustata, C. aperta, C. aquatilis, C. arcta, C. arenaria, C. atherodes, C. athrostachya, C. atrosquama, C. aurea, C. barbarae, C. bebbii, C. bolanderi, C. brainerdii, C. brevior, C. breweri, C. buchananii, C. buxbaumii, C. californica, C. canescens, C. capillaris, C. capitata, C. chordorrhiza, C. comans, C. comosa, C. concinna, C. concinnoides, C. cordillerana, C. crawfordii, C. cusickii, C. davyi, C. deflexa, C. densa, C. diandra, C. disperma, C. distans, C. douglasii, C. duriuscula, C. exsiccata, C. feta, C. filifolia, C. fissuricola, C. fracta, C. geyeri, C. gynocrates, C. gynodynama, C. halliana, C. harfordii, C. hassei, C. haydeniana, C. hendersonii, C. heteroneura, C. hirsutella, C. hirta, C. hoodii, C. hystericina, C. idahoa, C. illota, C. infirminervia, C. inops, C. integra, C. interior, C. interrupta, C. jonesii, C. kelloggii, C. klamathensis, C. kobomugi, C. laeviculmis, C. lasiocarpa, C. leporina, C. leporinella, C. leptalea, C. leptopoda, C. limosa, C. livida, C. longii, C. luzulina, C. lyngbyei, C. macrocephala, C. macrochaeta, C. media, C. mendocinensis, C. mertensii, C. mesochorea, C. micropoda, C. microptera, C. multicaulis, C. nardina, C. nebrascensis, C. nervina, C. neurophora, C. nigricans, C. nudata, C. obnupta, C. pachycarpa, C. pachystachya, C. pansa, C. paysonis, C. pellita, C. pelocarpa, C. pendula, C. petasata, C. phaeocephala, C. pluriflora, C. praeceptorum, C. praegracilis, C. praticola, C. preslii, C. pumila, C. raynoldsii, C. retrorsa, C. rossii, C. saxatilis, C. scabriuscula, C. scirpoidea, C. scoparia, C. scopulorum, C. serpenticola, C. serratodens, C. sheldonii, C. simulata, C. spectabilis, C. stipata, C. straminiformis, C. subbracteata, C. subfusca, C. subnigricans, C. sychnocephala, C. tahoensis, C. tiogana, C. tribuloides, C. tumulicola, C. unilateralis, C. utriculata, C. vallicola, C. vernacula, C. vesicaria, C. viridula, C. vulpinoidea, C. whitneyi, C. zikae
C. abrupta, C. agastachys, C. amplifolia, C. angustata, C. aperta, C. aquatilis, C. arcta, C. arenaria, C. atherodes, C. athrostachya, C. atrosquama, C. aurea, C. barbarae, C. bebbii, C. bolanderi, C. brainerdii, C. brevior, C. breweri, C. buchananii, C. buxbaumii, C. californica, C. canescens, C. capillaris, C. capitata, C. chordorrhiza, C. comans, C. comosa, C. concinna, C. concinnoides, C. cordillerana, C. crawfordii, C. cusickii, C. davyi, C. deflexa, C. densa, C. diandra, C. disperma, C. distans, C. douglasii, C. duriuscula, C. echinata, C. exsiccata, C. feta, C. filifolia, C. fissuricola, C. fracta, C. geyeri, C. gynocrates, C. gynodynama, C. halliana, C. harfordii, C. hassei, C. haydeniana, C. hendersonii, C. heteroneura, C. hirsutella, C. hirta, C. hoodii, C. hystericina, C. idahoa, C. illota, C. inops, C. integra, C. interior, C. interrupta, C. jonesii, C. kelloggii, C. klamathensis, C. kobomugi, C. laeviculmis, C. lasiocarpa, C. leporina, C. leporinella, C. leptalea, C. leptopoda, C. limosa, C. livida, C. longii, C. luzulina, C. lyngbyei, C. macrocephala, C. macrochaeta, C. media, C. mendocinensis, C. mertensii, C. mesochorea, C. micropoda, C. microptera, C. multicaulis, C. nardina, C. nebrascensis, C. nervina, C. neurophora, C. nigricans, C. nudata, C. obnupta, C. pachycarpa, C. pachystachya, C. pansa, C. paysonis, C. pellita, C. pelocarpa, C. pendula, C. petasata, C. phaeocephala, C. pluriflora, C. praeceptorum, C. praegracilis, C. praticola, C. preslii, C. pumila, C. raynoldsii, C. retrorsa, C. rossii, C. saxatilis, C. scabriuscula, C. scirpoidea, C. scoparia, C. scopulorum, C. serpenticola, C. serratodens, C. sheldonii, C. simulata, C. spectabilis, C. stipata, C. straminiformis, C. subbracteata, C. subfusca, C. subnigricans, C. sychnocephala, C. tahoensis, C. tiogana, C. tribuloides, C. tumulicola, C. unilateralis, C. utriculata, C. vallicola, C. vernacula, C. vesicaria, C. viridula, C. vulpinoidea, C. whitneyi, C. zikae
Subordinate taxa
C. echinata ssp. echinata, C. echinata ssp. phyllomanica
Synonyms Carex deweyana
Web links