Telesonix heucheriformis |
Telesonix jamesii |
|
---|---|---|
alumroot brookfoam |
James' saxifrage, James' telesonix |
|
Flowering stems | 30–230 cm. |
6–18 cm. |
Leaves | stipules of cauline leaves 1–2 mm (often fimbriate, sometimes foliaceous); petiole (5–)10–50(–100) mm; blade 9–50 × 13–70 mm, succulent. |
stipules of cauline leaves 1–1.5 mm; petiole 10–45 mm; blade 10–30 × 14–40 mm, succulent. |
Pedicels | densely stipitate-glandular. |
densely stipitate-glandular. |
Flowers | hypanthium free from ovary (1.5–)2–3.5 mm, campanulate to turbinate; sepals erect, lanceolate to ovate-lanceolate, 3–6 mm, apex usually acute; petals violet-purple, ovate or spatulate, 3–6(–6.8) × 1–3.5(–5) mm, lengths ca. 1.3 times sepals, base tapered to claw; stamens (1.9–)2.5–3.3(–3.8) mm; anthers obtuse; styles connate ca. 1/2 their lengths. |
hypanthium free from ovary 1–2(–2.5) mm, campanulate to turbinate; sepals erect, lanceolate to ovate-lanceolate, 2–6 mm, apex usually acute; petals crimson-purple, orbiculate, (5–)7–11 × (2–)4–7 mm, lengths at least 1.75 times sepals, base contracted abruptly to claw 1–3 mm; stamens 2.4–3.7 mm; anthers obtuse; styles connate at least 3/4 their lengths. |
Capsules | ovoid. |
ovoid. |
Seeds | 50–100. |
50–100. |
2n | = 14. |
= 14. |
Telesonix heucheriformis |
Telesonix jamesii |
|
Phenology | Flowering summer. | Flowering mid-late summer. |
Habitat | Crevices of calcareous rock faces | Crevices of granitic rock faces and talus |
Elevation | (1500-)2500-3500 m ((4900-)8200-11500 ft) | 3000-3500 m (9800-11500 ft) |
Distribution |
ID; MT; NV; UT; WY; AB
|
CO; NM |
Discussion | Plants of Telesonix heucheriformis from central and western Wyoming have petals approaching in size those of T. jamesii. Because of this, there is an argument for treating the two taxa as varieties of a single species; however, they are readily distinguishable throughout almost all of the range, have different edaphic preferences, slight differences in pollen morphology, and different flavonoid chemistries (R. J. Gornall and B. A. Bohm 1980). A report from South Dakota (P. A. Rydberg 1905c) is considered erroneous, given its age and the absence of any voucher specimens. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
The record of Telesonix jamesii from New Mexico is based on poor material and should be regarded as provisional. There is a report (J. G. Packer and D. H. Vitt 1974) of this species (or T. heucheriformis) from Laramie Mountain, Wyoming; no voucher specimens have been seen. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 8, p. 117. | FNA vol. 8, p. 117. |
Parent taxa | Saxifragaceae > Telesonix | Saxifragaceae > Telesonix |
Sibling taxa | ||
Synonyms | Therofon heucheriforme, Boykinia heucheriformis, Boykinia jamesii var. heucheriformis, Saxifraga heucheriformis, T. jamesii var. heucheriformis | Saxifraga jamesii, Boykinia jamesii, Therofon jamesii |
Name authority | (Rydberg) Rydberg: in N. L. Britton et al., N. Amer. Fl. 22: 126. (1905) | (Torrey) Rafinesque: Fl. Tellur. 2: 69. 1837 (as jamesi) , |
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