Flora of North America species comparison

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Collinsia wrightii

Wright's blue-eyed Mary
Habit Annuals 5–25 cm.
Stems

erect.
Leaf

blades linear to elliptic, margins entire or serrate.
Inflorescences

densely glandular;

nodes (1–)3–6-flowered;

flowers not crowded;

distalmost bracts linear, 0–2 mm.
Pedicels

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

calyx lobes narrowly deltate to lanceolate, equal to capsule, apex subacute to rounded;

corolla blue-violet to purple, banner white, cream, or pale lilac, 4–6(–9) mm, sparsely glandular;

banner length 0.7–0.8 times wings, lobe base without folds, wings surpassing keel by 1–2 mm;

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

2, ovate to oblong, sometimes compressed, 2–2.5 mm, margins thickened, inrolled.

Collinsia wrightii
Phenology Flowering May–Aug.
Habitat Coniferous forests, usually in sandy, granitic soils.
Elevation 800–4000 m. (2600–13100 ft.)
Distribution
from FNA
CA
Discussion

A report of Collinsia wrightii (as C. torreyi var. wrightii) from western Nevada (J. T. Kartesz 1987) has not been verified by the author.

Collinsia wrightii is often confused with C. parviflora and less frequently with C. torreyi. The corolla of C. wrightii is purplish as in C. torreyi and not the bright blue of C. parviflora. Collinsia wrightii and C. parviflora differ most evidently in plant stature and corolla size; C. wrightii is generally more diminutive.

The large-flowered form of Collinsia wrightii, corolla (6–)8–9 mm, has been treated as C. torreyi var. brevicarinata and occurs only near Kings Canyon and Sequoia national parks. The flowers are similar in size to those of C. torreyi as treated here but differ in corolla shape (wings surpassing tip of keel by 1.5–2 mm) and leaf shape and length. The seeds of the large-flowered form are compressed; those of the small-flowered form are not.

A phylogenetic study (B. G. Baldwin et al. 2011) showed that Collinsia wrightii and C. torreyi belong to divergent lineages and supports the recognition of these taxa as distinct species based on differences in the lengths of the wings relative to the tips of the keels.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 17, p. 70.
Parent taxa Plantaginaceae > Collinsia
Sibling taxa
C. antonina, 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
Synonyms C. brachysiphon, C. monticola, C. torreyi var. brachysiphon, C. torreyi var. brevicarinata, C. torreyi var. wrightii
Name authority S. Watson: Proc. Amer. Acad. Arts 24: 84. (1889)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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