Diplacus graniticola |
Diplacus cusickioides |
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granite-crack monkeyflower |
Cusick's monkeyflower, Nesom's monkey-flower |
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Habit | Herbs, annual, herbage usually drying dark. | Herbs, annual. |
Stems | erect, 60–120(–150) mm, nodes 4–15(–20), internodes shorter than leaves, glandular-villous with gland-tipped hairs 1–1.6 mm. |
erect to erect-ascending, (10–)30–240(–350) mm, distal internodes 1–5 mm, densely glandular-villous. |
Leaves | usually cauline, relatively even-sized; petiole weakly delimited; blade usually lanceolate to ovate-lanceolate, 20–40 × 4–12 mm, margins entire, rarely toothed, plane, apex rounded to obtuse or acute, surfaces: proximals often glabrate abaxially, distals glandular-villous. |
basal and cauline or usually cauline, relatively even-sized or gradually larger distally; petiole absent, proximal base short petiole-like, 1–5 mm; blade ovate to broadly elliptic-ovate, (10–)15–25(–35) × 4–16 mm, margins entire, plane, apex abruptly acuminate, surfaces densely glandular-villous. |
Pedicels | 1–3 mm in fruit. |
1–1.5 mm in fruit. |
Flowers | 2 per node, or 1 or 2 per node on 1 plant, chasmogamous. |
2 per node, or 1 or 2 per node on 1 plant, chasmogamous. |
Styles | glandular-puberulent. |
puberulent, at least on distal 1/2. |
Corollas | nearly white or pale lavender to pinkish or pale to dark magenta, each lobe with a dark medial line extending nearly to tip, throat with a dark red or purple splotch at junction of each abaxial lobe and adjacent lateral lobe, throat floor sometimes with 2 adjacent white splotches at lateral lobe bases, palate ridges yellow, tube-throat 15–20 mm, limb 10–16 mm diam., bilabiate. |
magenta or rose purple, tube yellow, throat usually yellow, throat and distal tube red-spotted on floor, palate ridges yellow, tube-throat 13–16(–19) mm, limb 14–26 mm diam., bilabiate. |
Calyces | symmetrically attached to pedicels, not inflated in fruit, 8–12 mm, glandular-villous, tube strongly plicate, lobes triangular, subequal, apex acute, ribs narrow, darkened, blackish, thickened, strongly raised, intercostal areas green to purple, not membranous. |
symmetrically attached to pedicels, not inflated in fruit, 7–12 mm, glabrous or minutely stipitate-glandular, lobes unequal, apex linear-acuminate, sharp-pointed, ribs green distally, intercostal areas whitish. |
Capsules | 6–10 mm. |
10–17 mm. |
Anthers | included, ciliate. |
included, glabrous or sparsely hirsutulous. |
Stigmas | included, lobes unequal, abaxial 1.5 times adaxial. |
exserted, lobes subequal (herkogamous). |
2n | = 16. |
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Diplacus graniticola |
Diplacus cusickioides |
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Phenology | Flowering Apr–Sep. | Flowering May–Aug. |
Habitat | Granite cracks and crevices. | Lava formations, steep slopes, roadsides, volcanic gravels, scree, ash. |
Elevation | 300–2100 m. (1000–6900 ft.) | (400–)600–1500(–2000) m. ((1300–)2000–4900(–6600) ft.) |
Distribution |
CA
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CA; ID; OR; WA
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Discussion | Diplacus graniticola occurs in the Sierra Nevada from Tuolumne County to northern Tulare County. These plants previously were identified within D. layneae, with which they are partially sympatric; where these two occur together, D. layneae often grows in granite-derived sand and gravel immediately adjacent to the granite rock habitat of D. graniticola. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Diplacus cusickioides occurs in western Idaho, eastern Oregon, Klickitat County, Washington, and apparently in a disjunct population system in Modoc County, California, on the east side of the Warner Mountains. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 438. | FNA vol. 17, p. 439. |
Parent taxa | Phrymaceae > Diplacus | Phrymaceae > Diplacus |
Sibling taxa | ||
Name authority | Schoenig: Phytoneuron 2017-24: 1, figs. 1, 3–10. (2017) | G. L. Nesom: Phytoneuron 2013-65: 6, figs. 3, 4. (2013) |
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