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San Antonio collinsia

broad-leafed collinsia, Torrey's collinsia

Habit Annuals 4–15 cm. Annuals 5–25 cm.
Stems

erect.

erect to ascending.

Leaf

blades oblong, margins crenate.

blades elliptic to ovate, length usually 2–5 times width, margins entire or serrate.

Inflorescences

± finely scaly, usually sparsely, finely glandular;

nodes 1–3-flowered;

flowers not crowded;

distalmost bracts linear, 2–3 mm.

densely glandular;

nodes (1–)3–6-flowered;

flowers not crowded;

distalmost bracts linear, 0–2 mm.

Pedicels

ascending to spreading, proximalmost longer than calyx, distalmost equal to calyx, visible.

ascending to spreading, sometimes reflexed, pendent and/or sigmoid in fruit, usually longer than calyx, visible.

Flowers

calyx lobes lanceolate, slightly surpassing capsule, apex blunt to rounded, inner face white-hairy;

corolla purple, lobes purple, rarely white, throat white with red-purple spots at base of banner, 4.5–8 mm, glabrous;

banner length 1 times wings, lobe base without folds;

stamens: abaxial filaments glabrous, adaxials sparsely hairy, basal spur 0.

calyx lobes lanceolate to ovate, equal to capsule, apex subacute to rounded;

corolla blue-violet to purple, banner white, cream, or pale lilac, 6–9 mm, sparsely glandular;

banner length 0.7–0.8(–0.9) times wings, lobe base with folds bulging 0.5 mm away from throat opening at base of each lobe, wings equal to keel;

stamens: abaxial filaments glabrous, adaxials glabrous or hairy at base, basal spur 0.

Seeds

6–8, oblong, 1.5–2 mm, margins thickened, inrolled.

2, ovate to oblong, often curled toward attachment side, 2–2.5 mm, margins thickened, inrolled.

2n

= 14.

Collinsia antonina

Collinsia latifolia

Phenology Flowering Mar–Apr. Flowering Jun–Aug.
Habitat Margins of oak scrub on screes. Mixed oak-conifer forests, openings near montane chaparral.
Elevation 200–400 m. (700–1300 ft.) 1000–2500 m. (3300–8200 ft.)
Distribution
from FNA
CA
[BONAP county map]
from FNA
CA; OR
Discussion

Collinsia antonina is geographically narrowly endemic, known only from Monterey County. It occurs on scree derived from whitish siliceous shale of the Monterey Formation at the edge of woodlands near the shade of Quercus john-tuckeri. It is morphologically similar to C. parryi, which lacks the coarse white hairs on the inner face of the sepals. DNA studies (B. G. Baldwin et al. 2011) show a more distant relationship between C. antonina and C. parryi than suspected from morphology alone.

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

Collinsia latifolia occurs on volcanic and metamorphic substrates in northern California and southern Oregon in the Klamath and Cascade ranges, and in the North Coast Ranges of California. Its flowers are nearly identical to those of C. torreyi, which differs in leaf shape: linear in C. torreyi and elliptic to ovate in C. latifolia.

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

Source FNA vol. 17, p. 66. FNA vol. 17, p. 71.
Parent taxa Plantaginaceae > Collinsia Plantaginaceae > Collinsia
Sibling taxa
C. bartsiifolia, C. callosa, C. childii, C. concolor, C. corymbosa, C. grandiflora, C. greenei, C. heterophylla, C. latifolia, C. linearis, C. multicolor, C. parryi, C. parviflora, C. rattanii, C. sparsiflora, C. tinctoria, C. torreyi, C. verna, C. violacea, C. wrightii
C. antonina, C. bartsiifolia, C. callosa, C. childii, C. concolor, C. corymbosa, C. grandiflora, C. greenei, C. heterophylla, C. linearis, C. multicolor, C. parryi, C. parviflora, C. rattanii, C. sparsiflora, C. tinctoria, C. torreyi, C. verna, C. violacea, C. wrightii
Synonyms C. antonina subsp. purpurea C. torreyi var. latifolia
Name authority Hardham: Leafl. W. Bot. 10: 133. (1964) (Newsom) B. G. Baldwin: Kalisz & Armbruster, Amer. J. Bot. 98: 747. (2011)
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