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

céraiste aggloméré, large mouse ears, sticky chickweed, sticky mouse-ear chickweed

common chickweed, céraiste penché, longstem chickweed, nodding chickweed, nodding mouse-ear chickweed

Habit Plants annual, with slender taproots. Plants annual, slender, finely glandular-pubescent (often perennial and tomentose in var. obtectum), with slender taproot.
Stems

erect or ascending, branched, 5–45 cm, hairy, glandular at least distally, rarely eglandular; small axillary tufts of leaves absent.

erect, simple or branched at or near base, sometimes with straggling, nonflowering basal shoots, 10–50 cm, softly pubescent, often with a few long, flexuous, woolly hairs at proximal nodes, glandular and somewhat viscid distally; small axillary tufts of leaves usually absent.

Leaves

not marcescent, ± sessile;

blade 5–20(–30) × 2–8(–15) mm, apex apiculate, covered with spreading, white, long hairs;

basal with blade oblanceolate or obovate, narrowed proximally, sometimes spatulate;

cauline with blade broadly ovate or elliptic-ovate.

marcescent or not, sessile;

blade oblanceolate to spatulate in proximal leaves, becoming lanceolate to linear-lanceolate in distal leaves, occasionally elliptic, 10–60 × 3–15 mm, apex acuminate to acute, softly pubescent and glandular, sometimes tomentose.

Inflorescences

3–50-flowered, aggregated into dense, cymose clusters or in more-open dichasia;

bracts: proximal herbaceous, distal lanceolate, apex acute, with long, mainly eglandular hairs.

rather open, 3–21(–40)-flowered cymes, ultimately widely branched;

bracts herbaceous, lanceolate, glandular-pubescent.

Pedicels

erect to spreading, often arcuate distally, 0.1–5 mm, shorter than capsule, glandular-pubescent.

ascending, sharply deflexed at apex in fruit, 5–20(–35) mm, usually 1–3 times as long as sepals in flower, elongating to 5 times as long as sepals in fruit, longer than capsules, glandular-pubescent and viscid.

Flowers

sepals green, rarely dark-red tipped, lanceolate, 4–5 mm, margins narrow, apex very acute, usually with glandular hairs as well as long white hairs usually extending beyond apex;

petals oblanceolate, 3–5 mm, rarely absent, usually shorter than sepals, apex deeply 2-fid;

stamens 10;

styles 5.

sepals ovate-lanceolate, 4–6 mm, outer sepals herbaceous or with narrow margins, inner with margins ca. as wide as herbaceous center, apex broadly acute to obtuse, glandular-puberulent, hairs shorter than sepal tips;

petals oblanceolate, sometimes absent, 3–6(–8) mm, shorter to 1.5 times longer than sepals, apex 2-fid;

stamens 10;

styles 5.

Capsules

narrowly cylindric, curved, 7–10 mm;

teeth 10, erect, margins convolute.

cylindric, curved, (9–)10–12(–13) mm, 2–3 times as long as sepals;

teeth 10, erect, margins convolute.

Seeds

pale brown, 0.5–0.6 mm, finely tuberculate;

testa inflated or not.

golden brown, 0.5–0.8 mm diam., shallowly tuberculate;

testa not inflated.

2n

= 72.

= 34, 36.

Cerastium glomeratum

Cerastium nutans

Phenology Flowering throughout growing season.
Habitat Arable land, waste places, roadsides
Elevation 0-1800 m (0-5900 ft)
Distribution
from FNA
AK; AL; AR; AZ; CA; CT; DC; DE; FL; GA; ID; IL; IN; KS; KY; LA; MA; MD; MI; MO; MS; MT; NC; NJ; NM; NV; NY; OH; OK; OR; PA; RI; SC; TN; TX; VA; WA; WV; BC; NF; NS; ON; QC; YT; Europe [Introduced in North America; introduced and common in Mexico]
[WildflowerSearch map]
[BONAP county map]
from FNA
AK; AL; AR; AZ; CO; CT; DC; DE; GA; IA; ID; IL; IN; KS; KY; MA; MD; MI; MN; MO; MS; MT; NC; ND; NE; NJ; NM; NY; OH; OR; PA; SD; TN; TX; VA; VT; WA; WI; WV; WY; AB; BC; MB; NT; ON; QC; SK; YT; Mexico
[WildflowerSearch map]
[BONAP county map]
Discussion

Cerastium glomeratum often has been reported as C. viscosum Linneaus, an ambiguous name; see discussion under the genus.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Varieties 2 (2 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Key
1. Leaves not marcescent, long, woolly pubescence confined to proximal nodes
var. nutans
1. Leaves tending to be marcescent, leaves and stem with long, woolly pubescence
var. obtectum
Source FNA vol. 5, p. 87. FNA vol. 5, p. 87.
Parent taxa Caryophyllaceae > subfam. Alsinoideae > Cerastium Caryophyllaceae > subfam. Alsinoideae > Cerastium
Sibling taxa
C. aleuticum, C. alpinum, C. arcticum, C. arvense, C. axillare, C. beeringianum, C. bialynickii, C. brachypetalum, C. brachypodum, C. cerastoides, C. dichotomum, C. diffusum, C. dubium, C. fastigiatum, C. fischerianum, C. fontanum, C. maximum, C. nutans, C. pumilum, C. regelii, C. semidecandrum, C. terrae-novae, C. texanum, C. tomentosum, C. velutinum, C. viride
C. aleuticum, C. alpinum, C. arcticum, C. arvense, C. axillare, C. beeringianum, C. bialynickii, C. brachypetalum, C. brachypodum, C. cerastoides, C. dichotomum, C. diffusum, C. dubium, C. fastigiatum, C. fischerianum, C. fontanum, C. glomeratum, C. maximum, C. pumilum, C. regelii, C. semidecandrum, C. terrae-novae, C. texanum, C. tomentosum, C. velutinum, C. viride
Subordinate taxa
C. nutans var. nutans, C. nutans var. obtectum
Synonyms C. acutatum, C. fulvum
Name authority Thuillier: Fl. Env. Paris ed. 2, 226. (1799) Rafinesque: Précis Découv. Somiol., 36. (1814)
Web links