Flora of North America species comparison

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Collinsia greenei

Collinsia rattanii

Greene's blue-eyed Mary, Greene's collinsia

Rattan collinsia, Rattan's collinsia, sticky blue-eyed Mary
Habit Annuals 10–30 cm. Annuals 8–40 cm.
Stems

erect to ascending.

erect to ascending.
Leaf

blades narrowly lanceolate to ovate or oblanceolate, margins entire or serrate.

blades ± linear, length usually 6+ times width, margins entire, rarely crenate.
Inflorescences

glandular;

nodes 1–5-flowered;

flowers crowded or not;

distalmost bracts linear, 2–3 mm.

scaly and spreading-glandular;

nodes 1–3(–5)-flowered;

flowers not crowded;

distalmost bracts linear, 2–5 mm.
Pedicels

ascending to spreading, proximalmost sometimes longer than calyx, distalmost equal to or shorter than calyx, visible or not.

ascending, longer than calyx, visible.
Flowers

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

corolla ± uniformly dark purple, rarely pale pinkish purple, 10–15 mm, sparsely glandular;

banner length 0.5 times wings, base with 2-crested, crescent-shaped folds extending 1–1.5 mm from throat opening;

stamens: filaments glabrous, adaxials sometimes hairy, basal spur 0.

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

corolla purplish lavender, rarely white, 4–8 mm, glabrous or keel sometimes sparsely glandular;

banner length 0.8–1 times wings, lobe base with folds bulging less than 0.5 mm away from throat opening, reflexed portion length 1 times throat;

throat barely angled to tube, pouch ± hidden by calyx;

stamens: abaxial filaments glabrous, adaxials hairy at base, basal spur 0(or 1).
Seeds

2–4, oval, 2–3 mm, margins thin, not inrolled.

(3 or)4–6, oblong to ovate, 1.5–2 mm, margins thickened, inrolled.
2n

= 14.

= 14.

Collinsia greenei

Collinsia rattanii
Phenology Flowering Apr–Jul(–Aug). Flowering May–Jul(–Aug).
Habitat Open chaparral or coniferous forests, serpentine slopes. Open coniferous forests.
Elevation 300–2500 m. (1000–8200 ft.) 60–1500 m. (200–4900 ft.)
Distribution
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; OR; WA
[WildflowerSearch map]
[BONAP county map]
Discussion

Collinsia greenei occurs on ophiolites, most frequently on soil derived from serpentinite and similarly altered ultramafic rock. Within its range, only C. rattanii occurs on these substrates; C. latifolia, C. parviflora, and C. wrightii are not on highly mafic soil.

The dark, nearly uniformly purple corollas of Collinsia greenei are distinctive, and the crescent-shaped flap of tissue on the adaxial lobes is unique. Other taxa have folds that bulge outward but are neither doubly crested nor crescent-shaped.

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

Collinsia rattanii is best distinguished from C. linearis by corolla shape (floor of throat nearly parallel to abaxial side of calyx and reflexed portion of adaxial lip about equal to throat) and smaller size.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 17, p. 67. FNA vol. 17, p. 69.
Parent taxa Plantaginaceae > Collinsia Plantaginaceae > Collinsia
Sibling taxa
C. antonina, C. bartsiifolia, C. callosa, C. childii, C. concolor, C. corymbosa, C. grandiflora, 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. latifolia, C. linearis, C. multicolor, C. parryi, C. parviflora, C. sparsiflora, C. tinctoria, C. torreyi, C. verna, C. violacea, C. wrightii
Synonyms C. rattanii subsp. glandulosa
Name authority A. Gray: Proc. Amer. Acad. Arts 10: 75. (1874) A. Gray: Proc. Amer. Acad. Arts 15: 50. (1879) — (as rattani)
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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