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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
from FNA
ID; MT; NV; UT; WY; AB
[WildflowerSearch map]
[BONAP county map]
from FNA
CO; NM
[BONAP county map]
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
T. jamesii
T. heucheriformis
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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