Flora of North America species comparison

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Calochortus umpquaensis

Calochortus luteus
Calochortus umpquaensis

Umpqua mariposa-lily

yellow mariposa, yellow mariposa lily
Stems

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

slender, 2–5 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, 1–2 dm;

blade linear.
Inflorescences

subumbellate, 1–4-flowered;

bracts 1–8 cm.
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, campanulate;

sepals lanceolate-oblong, attenuate, 2–3 cm;

petals deep yellow, usually streaked red-brown proximally, often with median red-brown blotch, cuneate to obovate, 2–4 cm, with a few slender hairs near gland;

glands ± lunate to oblong, not depressed, covered with short, matted hairs;

filaments 7–9 mm;

anthers linear-oblong, 4–6 mm, apex obtuse or acute.
Capsules

nodding, 3–5.4 cm.

erect, lanceoloid-linear, angled, 3–6 cm.
Seeds

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

light beige, flat.
2n

= 20.

= 14, 28.

Calochortus umpquaensis

Calochortus luteus
Phenology Flowering late spring–mid summer. Flowering late spring–mid summer.
Habitat Grassland-forest ecotones in serpentine-derived soils Heavy soils in grasslands, open woodlands, mixed evergreen forests
Elevation 300–500 m (1000–1600 ft) 0–700 m (0–2300 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.)

Coastal plants of Calochortus luteus are mostly triploid, while those of the interior are mostly diploid. Occasionally this species hybridizes with C. superbus.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 26, p. 130. FNA vol. 26, p. 135.
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. 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 Mariposa lutea
Name authority Fredricks: Syst. Bot. 14: 12, figs. 1, 2, 3f–j, 4, 5. (1989) Douglas ex Lindley: Edwards’s Bot. Reg. 19: plate 1567. (1833)
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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