Flora of North America species comparison

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Calochortus umpquaensis

Calochortus plummerae
Calochortus umpquaensis

Umpqua mariposa-lily

Plummer's mariposa-lily
Habit Plants usually bulbose; bulb coat fibrous-reticulate.
Stems

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

slender, usually branching, 3–6 dm.
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 withering;

blade linear to lanceolate, 2–4 dm.
Inflorescences

2–6-flowered;

bracts resembling distal cauline leaves.
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.

erect;

perianth open, broadly campanulate;

sepals lanceolate, 3–5 cm, glabrous or with a few hairs at base, apex long-tapering;

petals pale pink to rose, drying purplish, broadly cuneate to obovate, 3–4 cm, glabrous distally or nearly so, rarely fringed, with conspicuous, long, yellow hairs in broad median band, margins dentate;

glands round, slightly depressed, ± glabrous, bordered by ring of dense, obscuring, orange hairs;

filaments 9–11 mm, ± equaling anthers;

anthers lanceolate-linear, apex acute to somewhat short-tipped.
Capsules

nodding, 3–5.4 cm.

erect, linear, angled, 4–8 cm, apex acute.
Seeds

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

light beige.
2n

= 20.

= 18.

Calochortus umpquaensis

Calochortus plummerae
Phenology Flowering late spring–mid summer. Flowering late spring–mid summer.
Habitat Grassland-forest ecotones in serpentine-derived soils Dry rocky slopes, often in brush, chaparral, pine forest
Elevation 300–500 m (1000–1600 ft) 0–1700 m (0–5600 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. 140.
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. 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. 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
Name authority Fredricks: Syst. Bot. 14: 12, figs. 1, 2, 3f–j, 4, 5. (1989) Greene: Pittonia 2: 70. (1890)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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