Holmgrenanthe petrophila

(Coville & C. V. Morton) Elisens

Syst. Bot. Monogr. 5: 54. 1985.

IllustratedEndemicConservation concern
Basionym: Maurandya petrophila Coville & C. V. Morton J. Wash. Acad. Sci. 25: 292, fig. [p. 292]. 1935
Synonyms: Asarina petrophila (Coville & C. V. Morton) Pennell Maurandella petrophila (Coville & C. V. Morton) Rothmaler
Treatment appears in FNA Volume 17. Treatment on page 23.

Plants 5–12 cm, cespitose. Stems brittle. Leaves: petiole 12–27 mm; blade orbiculate to reniform, 12–35 × 14–27 mm, apex spinulose. Pedicels ascending, 1–4 mm, glandular-puberulent to glandular-villous. Flowers: sepals falcate, 9–13 × 2–3 mm, margins spinulose, glandular-villous; corolla-tube 20–24 mm, glandular-villous, throat open, palate not inflated, abaxial plicae dark yellow with ligulate hairs; lobes: abaxial projecting, adaxial erect, equal, rounded, 7–12 mm; stamens included, filaments incurved, yellow at base, abaxial 12–14 mm, adaxial 7–9 mm, pollen-sacs oblong; ovary with a T-shaped septum; style included, terete, 9–10 mm, stigma recurved. Capsules globular, 8–10 mm. Seeds 2–3 mm, surface foveolate.


Phenology: Flowering Apr–Jun.
Habitat: Calcareous canyon walls.
Elevation: 700–1800 m.

Discussion

Holmgrenanthe petrophila is known from the limestone walls of Fall and Titus canyons in the Grapevine Mountains in Death Valley National Monument, Inyo County.

Selected References

None.

Lower Taxa

None.
... more about "Holmgrenanthe petrophila"
1.2 cm12 mm <br />0.012 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
Wayne J. Elisens +
(Coville & C. V. Morton) Elisens +
alternate +, opposite +, whorled +, helical +  and subopposite +
Maurandya petrophila +
1.2 cm12 mm <br />0.012 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
orbiculate;reniform +
leathery +  and not fleshy +
1.4 cm14 mm <br />0.014 m <br /> (2.7 cm27 mm <br />0.027 m <br />) +
urceolate +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
2 cm20 mm <br />0.02 m <br /> (2.4 cm24 mm <br />0.024 m <br />) +
glandular-villous +
drupe-like +
700–1800 m. +
curved +  and straight +
glandular-hairy +
1 +  and 4 +
Calcareous canyon walls. +
persistent +  and deciduous +
glandular-villous +
entire +  and subentire toothed or lobed +
axile +  and parietal +
basal +, apical +  and superior +
tenuinucellate +, unitegmic +  and hemitropous +
campylotropous +, hemianatropous +  and anatropous +
not inflated +
glandular-puberulent +  and glandular-villous +
0.1 cm1 mm <br />0.001 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
5 +  and 4 +
1.2 cm12 mm <br />0.012 m <br /> (2.7 cm27 mm <br />0.027 m <br />) +
Flowering Apr–Jun. +
Syst. Bot. Monogr. +
minute +
polygonal-pyramidal +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
distinct +
falcate +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
t--shaped +
Illustrated +, Endemic +  and Conservation concern +
filamentous +
climbing +  and scrambling +
sprawling +, creeping +  and prostrate +
0.9 cm9 mm <br />0.009 m <br /> (1 cm10 mm <br />0.01 m <br />) +
foveolate +
Asarina petrophila +  and Maurandella petrophila +
Holmgrenanthe petrophila +
Holmgrenanthe +
species +
gibbous +  and not spurred +
plant +  and cespitose +