Difference between revisions of "Lithophragma glabrum"
in J. Torrey and A. Gray, Fl. N. Amer. 1: 584. 1840 (as glabra) ,.
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Revision as of 00:01, 17 December 2019
Plants (often red), usually fragile, (flowers sometimes replaced with bulbils). Flowering stems simple, 8–35 cm. Leaves in basal rosette and cauline, basal 3-lobed, (segments 3–4-lobed, round), cauline (2–4), 3-lobed or -foliolate, much reduced, similar to basal, (segments or leaflets simple or 1–3-lobed, often with axillary bulbils); stipules large, not decurrent on petiole, (margins fimbriate); petiole 1–4(–8) cm; blade green, orbiculate, base cordate, surfaces nearly glabrous or sparingly hairy. Inflorescences solitary flowers or erect, 2–5(–7)-flowered racemes, often appearing corymbose, rarely branched unless plant with bulbils, (8–20 cm, flowers sometimes replaced with bulbils). Pedicels to 3–4 times length of hypanthium, (flowers long-pedicellate). Flowers persistent, not fragrant, horizontal; hypanthium narrowly campanulate with acute or hemispheric base, elongating slightly in fruit, throat open, (length 2 times diam.); sepals erect in bud, widely spreading after anthesis, triangular; petals (completely exserted), widely spreading, usually pink, rarely white, ovate, narrowly clawed, deeply and palmately 5-lobed, (without serrations at base, sinuses extending 4/5+ to base of lamina), 3.5–7 mm, ultimate margins entire; ovary to 1/2 inferior; styles slightly exserted in fruit; stigma papillae apical. Seeds 0.5–0.6 mm, tuberculate (tubercles in 3–19 rows, blunt or spinelike). 2n = 14, 28.
Phenology: Flowering Feb–Sep.
Habitat: Seacoast bluffs and rocky meadows, open forests, grasslands and sagebrush shrublands to dry, open, gravelly subalpine sites
Elevation: 30-3600 m
Distribution
![V8 160-distribution-map.gif](/w/images/f/f5/V8_160-distribution-map.gif)
Alta., B.C., Sask., Calif., Colo., Idaho, Mont., Nev., Oreg., S.Dak., Utah, Wash., Wyo.
Discussion
The presence or absence of bulbils is the only feature distinguishing Lithophragma glabrum and L. bulbiferum; for this reason L. bulbiferum is not recognized in this treatment. Bulbil production is extremely variable within the same clone in L. heterophyllum (R. L. Taylor 1965).
Selected References
None.