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Calochortus howellii

Howell's mariposa lily

fairy-lantern, white fairy-lantern, white globe-lily

Stems

slender, not branching or rarely branching in axil of cauline leaf, straight, 2–4 dm.

usually branching, 20–80 cm.

Leaves

basal persistent, 20–35 cm;

blade gradually tapering distally, adaxially pubescent.

basal persistent, 3–7 dm;

blade linear, flat.

Inflorescences

subumbellate, 1–3-flowered;

bracts 2, subopposite, linear to narrowly lanceolate, attenuate, 1–3 cm.

2–many-flowered.

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.

nodding;

perianth ± closed at apex, ± oblong;

sepals appressed to petals, ovate to lanceolate, 10–15 mm, glabrous, apex acuminate;

petals usually white to pink, ± elliptic, 20–25 mm, sparsely ciliate, hairs distal to gland slender;

glands ± depressed, proximal ciliate membrane 1/3–2/3 petal width;

filaments equaling anthers;

anthers oblong, apex obtuse or acute.

Capsules

erect, 3-winged, ellipsoid, ca. 2 cm, base and apex acute.

nodding, winged, oblong, 2–4 cm, apex obtuse or acute.

Seeds

light-colored, irregular.

dark brown, irregular.

2n

= 20.

= 20.

Calochortus howellii

Calochortus albus

Phenology Flowering late spring–mid summer. Flowering mid spring–mid summer.
Habitat Dry, rocky, serpentine soils Shaded places in open woods and brush
Elevation 300–500 m (1000–1600 ft) 0–2000 m (0–6600 ft)
Distribution
from FNA
OR
[WildflowerSearch map]
[BONAP county map]
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
Discussion

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

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 26, p. 129. FNA vol. 26, p. 123.
Parent taxa Liliaceae > Calochortus Liliaceae > Calochortus
Sibling taxa
C. albus, C. amabilis, C. ambiguus, C. amoenus, C. apiculatus, C. argillosus, C. aureus, C. bruneaunis, C. catalinae, C. clavatus, C. coeruleus, C. concolor, C. coxii, C. dunnii, C. elegans, C. eurycarpus, C. excavatus, C. flexuosus, C. greenei, C. gunnisonii, C. indecorus, C. invenustus, C. kennedyi, C. leichtlinii, C. longebarbatus, C. luteus, C. lyallii, C. macrocarpus, C. minimus, C. monanthus, C. monophyllus, C. nitidus, C. nudus, C. nuttallii, C. obispoensis, C. palmeri, C. panamintensis, C. persistens, C. plummerae, C. pulchellus, C. raichei, C. simulans, C. splendens, C. striatus, C. subalpinus, C. superbus, C. tiburonensis, C. tolmiei, C. umbellatus, C. umpquaensis, C. uniflorus, C. venustus, C. vestae, C. weedii, C. westonii
C. amabilis, C. ambiguus, C. amoenus, C. apiculatus, C. argillosus, C. aureus, C. bruneaunis, C. catalinae, C. clavatus, C. coeruleus, C. concolor, C. coxii, C. dunnii, C. elegans, C. eurycarpus, C. excavatus, C. flexuosus, C. greenei, C. gunnisonii, C. howellii, C. indecorus, C. invenustus, C. kennedyi, C. leichtlinii, C. longebarbatus, C. luteus, C. lyallii, C. macrocarpus, C. minimus, C. monanthus, C. monophyllus, C. nitidus, C. nudus, C. nuttallii, C. obispoensis, C. palmeri, C. panamintensis, C. persistens, C. plummerae, C. pulchellus, C. raichei, C. simulans, C. splendens, C. striatus, C. subalpinus, C. superbus, C. tiburonensis, C. tolmiei, C. umbellatus, C. umpquaensis, C. uniflorus, C. venustus, C. vestae, C. weedii, C. westonii
Synonyms Cyclobothra alba, C. albus var. rubellus
Name authority S. Watson: Proc. Amer. Acad. Arts 23: 266. (1888) (Bentham) Douglas ex Bentham: Botanist 2: no. 98. (1838)
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