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

anomalous mouse-ear chickweed, doubtful chickweed, three-style chickweed

Habit Plants annual, with slender taproots. Plants annual, taprooted.
Stems

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

erect, many-branched from base, 10–40 cm, minutely viscid-glandular; 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.

not marcescent, distal sessile, proximal spatulate;

blade linear or linear- lanceolate to linear-oblong, 10–30 × 1–4 mm, apex obtuse to subacute, glabrous or sparsely and minutely viscid-glandular.

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.

lax, 3–21(–30)-flowered cymes;

bracts narrowly lanceolate, glandular-pubescent.

Pedicels

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

erect, slender, 2–15 mm, 0.5–3 times as long as sepals, glandular-puberulent Flowers: sepals ovate-lanceolate, 5–6 mm, margins narrow, apex acute to obtuse, minutely viscid-glandular;

petals oblanceolate, 5–8 mm, 1.5 times as long as sepals, apex 2-fid;

stamens 10;

styles 3(–4).

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.

Capsules

narrowly cylindric, curved, 7–10 mm;

teeth 10, erect, margins convolute.

oblong-ovoid, straight, 8–11 mm, ca. 2 times as long as sepals;

teeth 6, occasionally 8, erect to spreading, margins convolute.

Seeds

pale brown, 0.5–0.6 mm, finely tuberculate;

testa inflated or not.

pale brown, ovate, 0.6 mm diam., tuberculate;

testa not inflated.

2n

= 72.

= 36, 38.

Cerastium glomeratum

Cerastium dubium

Phenology Flowering throughout growing season. Flowering spring.
Habitat Arable land, waste places, roadsides Alien weed of cultivated land
Elevation 0-1800 m (0-5900 ft) 200-800 m (700-2600 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
AR; ID; IL; IN; KS; KY; MS; OH; OR; TN; VA; WA; s Europe; Asia [Introduced in North America]
[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.)

First collected in North America in 1966 in Washington, Cerastium dubium has now been gathered from many widely scattered sites, and appears to be spreading rapidly.

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

Source FNA vol. 5, p. 87. FNA vol. 5, p. 85.
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. fastigiatum, C. fischerianum, C. fontanum, C. glomeratum, C. maximum, C. nutans, C. pumilum, C. regelii, C. semidecandrum, C. terrae-novae, C. texanum, C. tomentosum, C. velutinum, C. viride
Synonyms C. acutatum, C. fulvum Stellaria dubia, C. anomalum, Dichodon viscidum
Name authority Thuillier: Fl. Env. Paris ed. 2, 226. (1799) (Bastard) Guépin: Fl. Maine et Loire ed. 2, 1: 267. (1838)
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