Difference between revisions of "Penstemon tracyi"
Amer. Midl. Naturalist 23: 603, fig. 2. 1940.
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|elevation=2000–2100 m. | |elevation=2000–2100 m. | ||
|distribution=Calif. | |distribution=Calif. | ||
| − | |discussion=<p>Penstemon tracyi has been documented only in Siskiyou and Trinity counties.</p> | + | |discussion=<p><i>Penstemon tracyi</i> has been documented only in Siskiyou and Trinity counties.</p> |
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name=Penstemon tracyi | name=Penstemon tracyi | ||
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|authority=D. D. Keck | |authority=D. D. Keck | ||
|rank=species | |rank=species | ||
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|publication year=1940 | |publication year=1940 | ||
|special status=Endemic;Conservation concern | |special status=Endemic;Conservation concern | ||
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V17/V17_540.xml |
|genus=Penstemon | |genus=Penstemon | ||
|subgenus=Penstemon subg. Penstemon | |subgenus=Penstemon subg. Penstemon | ||
Latest revision as of 20:32, 5 November 2020
Herbs. Stems erect, 8–12 cm, glabrous, glaucescent. Leaves basal and cauline, leathery, glabrous; basal and proximal cauline 11–40 × 3–14 mm, blade spatulate to oval or orbiculate, base tapered, margins entire or ± denticulate or serrulate distally, apex rounded to obtuse; cauline 2–4, sessile, 9–20 × 4–10 mm, blade: proximals spatulate, distals obovate or elliptic, base truncate, margins entire or ± denticulate distally, apex rounded or mucronate. Thyrses continuous, cylindric, 2–4 cm, axis glabrous, verticillasters 2 or 3, cymes 2–5-flowered, 2 per node; proximal bracts elliptic to ovate, 6–18 × 2–10 mm, margins entire; peduncles and pedicels ascending to erect, glabrous. Flowers: calyx lobes ovate, 1.5–2 × 0.8–1.2 mm, glabrous or ± glandular-ciliolate; corolla white to pink, without nectar guides, funnelform, 11–15 mm, glabrous externally, densely white-villous internally abaxially, tube slightly differentiated, 3–5 mm, throat slightly inflated, 2–3 mm diam., rounded abaxially; stamens included, pollen sacs opposite, explanate, 0.4–0.5 mm, dehiscing completely, connective splitting, sides glabrous, sutures smooth; staminode 8–10 mm, reaching orifice, 0.2–0.3 mm diam., tip straight, distal 2–3 mm sparsely pilose, hairs white or yellowish, to 0.6 mm; style 9–13 mm. Capsules 5–8 × 3–4.5 mm, glabrous.
Phenology: Flowering Jul–Aug.
Habitat: Rock crevices.
Elevation: 2000–2100 m.
Discussion
Penstemon tracyi has been documented only in Siskiyou and Trinity counties.
Selected References
None.