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Calochortus umpquaensis

Umpqua mariposa-lily

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

Stems

not branching, straight, often scapelike, 2–3 dm, glabrous or glaucous.

usually branching, 20–80 cm.

Leaves

basal solitary, clasping;

blade narrowly lanceolate, hairy, adaxially hispid, abaxially glabrous, sometimes glaucous. Inflorescences 1–several-flowered;

bracts 2, suboppo-site, narrowly lanceolate.

basal persistent, 3–7 dm;

blade linear, flat.

Inflorescences

2–many-flowered.

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.

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

nodding, 3–5.4 cm.

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

Seeds

2.8–3.5 mm, with inflated bulbous crest and hollow lateral ridge.

dark brown, irregular.

2n

= 20.

= 20.

Calochortus umpquaensis

Calochortus albus

Phenology Flowering late spring–mid summer. Flowering mid spring–mid summer.
Habitat Grassland-forest ecotones in serpentine-derived 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

Of conservation concern.

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

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

Source FNA vol. 26, p. 130. 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. 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. 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 Fredricks: Syst. Bot. 14: 12, figs. 1, 2, 3f–j, 4, 5. (1989) (Bentham) Douglas ex Bentham: Botanist 2: no. 98. (1838)
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