Calochortus howellii

S. Watson

Proc. Amer. Acad. Arts 23: 266. 1888.

IllustratedEndemic
Treatment appears in FNA Volume 26. Treatment on page 129. Mentioned on page 121, 130.

Stems slender, not branching or rarely branching in axil of cauline leaf, straight, 2–4 dm. Leaves: basal persistent, 20–35 cm; blade gradually tapering distally, adaxially pubescent. Inflorescences subumbellate, 1–3-flowered; bracts 2, subopposite, linear to narrowly lanceolate, attenuate, 1–3 cm. Flowers erect; perianth open, campanulate; sepals shorter than petals, ovate-acuminate, glabrous; petals yellowish white, with purplish hairs toward base, broadly obovate, cuneate, inconspicuously fringed laterally, sparingly short-hairy adaxially, apex rounded; glands transversely oblong, slightly depressed, densely covered with short, distally branching hairs, the bases of which unite at lower margin to form inconspicuous, discontinuous membranes; filaments shorter than anthers; anthers oblong-lanceolate, apex acute to short-apiculate. Capsules erect, 3-winged, ellipsoid, ca. 2 cm, base and apex acute. Seeds light-colored, irregular. 2n = 20.


Phenology: Flowering late spring–mid summer.
Habitat: Dry, rocky, serpentine soils
Elevation: 300–500 m

Discussion

Calochortus howellii is known only from the Illinois River valley, Josephine County.

Selected References

None.

Lower Taxa

None.

"broad" 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 howellii"
pseudobasifixed +  and basifixed +
oblong-lanceolate +
acute +  and short-apiculate +
P. L. Fiedler +  and R. K. Zebell +
S. Watson +
whorled +, opposite +  and alternate +
petiole-like +
20 cm200 mm <br />0.2 m <br /> (35 cm350 mm <br />0.35 m <br />) +
reticulate-veined +  and parallel-veined +
tapering +
sheathing +  and involucrate +
subopposite +
attenuate;linear;narrowly lanceolate +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
tunicate +  and scaly +
ellipsoid +
2 cm20 mm <br />0.02 m <br /> (?) +
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 +
Dry, rocky, serpentine soils +
1-3-flowered +  and subumbellate +
paired +, paniculate +  and racemose +
persistent +
proximalmost +
reduced +
many;several +
campanulate +
yellowish white +
distinct +
short-hairy +
fringed;cuneate;obovate +
Flowering late spring–mid summer. +
Proc. Amer. Acad. Arts +
wind-distributed +
light-colored +
distinct +
ovate-acuminate +
Illustrated +  and Endemic +
adnate +  and free +
staminodial +
3 +, 4 +  and 6 +
branching +  and not branching +
straight +
glaucous +  and glabrous +
slender +
3 +  and 1 +
Calochortus howellii +
Calochortus +
species +
connate +  and distinct +
sepaloid +  and petaloid +
narrower +
caulescent +  and scapose +
3 +  and 2 +