Calochortus umpquaensis

Fredricks

Syst. Bot. 14: 12, figs. 1, 2, 3f–j, 4, 5. 1989.

Common names: Umpqua mariposa-lily
IllustratedEndemicConservation concern
Treatment appears in FNA Volume 26. Treatment on page 130. Mentioned on page 120.

Stems not branching, straight, often scapelike, 2–3 dm, glabrous or glaucous. Leaves: basal solitary, clasping; blade narrowly lanceolate, hairy, adaxially hispid, abaxially glabrous, sometimes glaucous. Inflorescences 1–several-flowered; bracts 2, subopposite, narrowly lanceolate. Flowers erect; perianth open, campanulate; sepals lanceolate-acuminate, ca. 2 cm; petals white to cream, with dark purple-black, pentagonal to lunate blotch, broadly oblong to obovate, 3.5 cm, bearded, adaxial surface typically minutely papillose, margins erose; glands transversely oblong-lunate, slightly depressed, with 0.7–1.4 mm-wide band of short dendritic hairs distally, hairs surrounded by lime-green coloration and purple striations; anthers lanceolate, apex acuminate. Capsules nodding, 3–5.4 cm. Seeds 2.8–3.5 mm, with inflated bulbous crest and hollow lateral ridge. 2n = 20.


Phenology: Flowering late spring–mid summer.
Habitat: Grassland-forest ecotones in serpentine-derived soils
Elevation: 300–500 m

Discussion

Of conservation concern.

Calochortus umpquaensis is known only from Watson and Ace Williams mountains on both sides of the Little River, Douglas County.

Selected References

None.

Lower Taxa

None.

"widened" is not a number."usually longer and broader" is not a number."thicker" is not a number."dm" is not declared as a valid unit of measurement for this property.

... more about "Calochortus umpquaensis"
pseudobasifixed +  and basifixed +
lanceolate +
P. L. Fiedler +  and R. K. Zebell +
Fredricks +
mm-wide +
whorled +, opposite +  and alternate +
dilated +
reticulate-veined +  and parallel-veined +
glaucous +, glabrous +, hispid +  and hairy +
lanceolate +
dark purple-black +
pentagonal;lunate +
sheathing +  and involucrate +
subopposite +
lanceolate +
tunicate +  and scaly +
3 cm30 mm <br />0.03 m <br /> (5.4 cm54 mm <br />0.054 m <br />) +
Umpqua mariposa-lily +
inflated +
300–500 m +
connate-coroniform +  and dilated +
sessile +  and pedicellate +
unisexual +  and bisexual +
winged +  and capsular +
globular +, oblong +, linear +  and 3-angled +
membranaceous +  and leathery +
depressed +  and oblong-lunate +
Grassland-forest ecotones in serpentine-derived soils +
1-several-flowered +
paired +, paniculate +  and racemose +
persistent +
proximalmost +
reduced +
many;several +
campanulate +
distinct +
3.5 cm35 mm <br />0.035 m <br /> (?) +
Flowering late spring–mid summer. +
wind-distributed +
distinct +
lanceolate-acuminate +
2 cm20 mm <br />0.02 m <br /> (?) +
Illustrated +, Endemic +  and Conservation concern +
adnate +  and free +
staminodial +
3 (?) +, 4 (?) +  and 6 (?) +
not branching +
straight +
3 (?) +  and 1 (?) +
Calochortus umpquaensis +
Calochortus +
species +
connate +  and distinct +
sepaloid +  and petaloid +
narrower +
caulescent +  and scapose +
3 +  and 2 +