Glossopetalon clokeyi

(Ensign) H. St. John

Proc. Biol. Soc. Wash. 55: 112. 1942.

Common names: Clokey’s greasebush
Conservation concernEndemic
Basionym: Forsellesia clokeyi Ensign Amer. Midl. Naturalist 27: 504, fig. 2. 1942
Treatment appears in FNA Volume 9. Treatment on page 14. Mentioned on page 13.

Shrubs forming relatively low mounds or mats, (10–) 15–25 cm. Stems: branchlets ascending, green to yellowish green during 1st (and sometimes 2d) year (s), eventually turning yellowish-brown, very slender, less than 0.5 mm diam.; bark of older branches pale-yellow to gray; tips sharply pointed, flexible, not or only weakly spinescent; glabrous or sparsely puberulent. Leaves: stipules triangular to narrowly triangular or filiform, 0.2–0.5 mm, fused basal portion not or only slightly thickened, not darkened or glandular, free tips minute; blade oblanceolate to narrowly elliptic-oblanceolate, 4–6 × 1–1.5 mm, margins not thickened, apex short-acuminate to sharply acute, usually non-mucronate, sometimes mucronate, mucro 0.1–0.4 mm, glabrous. Inflorescences appearing axillary, usually flowers solitary. Flowers: sepals 3–5, obovate, 1.2–1.5 mm, often slightly unequal, blunt to sharply acute, tips not spinescent; petals 3–5 (in different flowers on same plant), oblanceolate, 2–4 × 0.4–1 mm; stamens 4–6, in 1 equal series. Follicles 1, broadly ovoid, 3–4 mm, moderately striate, glabrous.


Phenology: Flowering May–Jul.
Habitat: Crevices and ledges of limestone cliffs
Elevation: 2100–3000 m

Discussion

Of conservation concern.

Glossopetalon clokeyi is known from the Spring (Charleston) Mountains in Clark County, where it occurs mostly at relatively inaccessible sites high on cliffs.

Selected References

None.

Lower Taxa

None.
... more about "Glossopetalon clokeyi"
puberulent +, , +  and glabrous +
fimbrillate +  and discoid +
Charles T. Mason Jr.† +  and George Yatskievych +
(Ensign) H. St. John +
pale-yellow;gray +
persistent +
tapered +, angled +  and decurrent +
expanded +
glandular-thickened +
Forsellesia clokeyi +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
oblanceolate;narrowly elliptic-oblanceolate +
1mm;1.5mm +
0 cm0 mm <br />0 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
opposite +  and alternate +
Clokey’s greasebush +
2100–3000 m +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
short-tapered +  and angled +
Crevices and ledges of limestone cliffs +
axillary +  and terminal +
drought-deciduous +  and deciduous +
glabrous +  and glaucous +
2-3-lobed +  and entire +
not thickened +
obscure +  and apparent +
puberulent +, glabrous +  and glaucous +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
persistent +
distinct +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
Flowering May–Jul. +
sessile +  and short-stipitate +
free +  and distinct +
Proc. Biol. Soc. Wash. +
decurrent +
pitted +  and smooth +
reniform +  and spheric +
distinct +
blunt;sharply acute +
unequal +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Conservation concern +  and Endemic +
decurrent +
? (?) +  and ? (?) +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
hardened +  and scarious +
Glossopetalon clokeyi +
Glossopetalon +
species +
not spinescent +  and spinescent +
pointed +
minute +
yellowish-brown +  and orangish brown +
puberulent +  and glabrous +