Flora of North America species comparison

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Calochortus nudus

Calochortus coxii

naked mariposa lily, naked star tulip, Shasta star-tulip

Cox's cat's ear, Cox's mariposa-lily
Stems

usually not branching, 1–3 dm.

usually not branching, straight to flexuous, often scapelike, 15–25 cm.
Leaves

basal persistent, 0.5–2 dm;

blade lanceolate, tapering at base, flat, glabrous adaxially.

basal ± erect, to 3 dm × 3–7 mm;

blade with adaxial surface densely hairy, abaxial surface glabrous, shiny.
Inflorescences

1–several-flowered.

erect, 1–7-flowered;

bracts 1–several, 2.5–3 cm.
Flowers

erect;

perianth open, campanulate;

sepals lanceolate, 10–12 mm, glabrous, apex acuminate;

petals pale lavender, widely obovate, 14–16 mm, adaxial surface ± glabrous, not ciliate;

glands not deeply depressed, bordered proximally by wide, ciliate membranes;

anthers linear-oblong, apex obtuse or acute.

erect;

perianth open, campanulate;

sepals ovate-acuminate, 20 × 8 mm;

petals white, with reddish striations from base to gland and broad lavender chevron just distal to gland margins, broadly obovate, 2.5 cm, adaxial surface densely hairy, margins slightly ciliate;

glands transversely oblong-lunate, deeply depressed, green at adaxial base, 1/2 to nearly equaling petal claw width, surrounded by yellow hairs that grade to white at petal apex, covered with membranous scales, scales covered with very small, translucent, rodlike hairs;

filaments 7 mm;

anthers reddish brown, 3–7 mm, apex apiculate.
Capsules

erect, 3-winged, 1–2 cm.

nodding, 3-winged, ellipsoid-elongate, 3–4 cm.
Seeds

light brown, irregular.

light beige, surface rough.
2n

= 20.

Calochortus nudus

Calochortus coxii
Phenology Flowering late spring–mid summer. Flowering mid summer.
Habitat Moist grassy areas, meadows, lake and bog margins North-facing open grassy slopes or woods, on serpentine
Elevation 1200–2500 m (3900–8200 ft) 200–1000 m (700–3300 ft)
Distribution
from FNA
CA; OR
[WildflowerSearch map]
[BONAP county map]
from FNA
OR
[WildflowerSearch map]
[BONAP county map]
Discussion

Calochortus nudus hybridizes with C. minimus.

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

Of conservation concern.

Calochortus coxii is endemic to Douglas County from near the Umpqua River to Myrtle Creek Mountain.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 26, p. 128. FNA vol. 26, p. 126.
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. 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. albus, C. amabilis, C. ambiguus, C. amoenus, C. apiculatus, C. argillosus, C. aureus, C. bruneaunis, C. catalinae, C. clavatus, C. coeruleus, C. concolor, 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 C. nudus var. shastensis, C. shastensis
Name authority S. Watson: Proc. Amer. Acad. Arts 14: 263. (1879) M. R. Godfrey & Callahan: Phytologia 65: 216, fig.1g–k. (1988)
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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