Flora of North America species comparison

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Calochortus uniflorus

Calochortus luteus

large-flower star-tulip, Monterey mariposa lily, pink star-tulip

yellow mariposa, yellow mariposa lily
Stems

usually not branching, shorter than 5(–10) cm, bearing bulblets near base.

slender, 2–5 dm.
Leaves

basal persistent, 1–4 dm;

blade lanceolate, flat;

cauline usually present.

basal withering, 1–2 dm;

blade linear.
Inflorescences

subumbellate, 1–5-flowered;

bracts 2–4, linear, attenuate.

subumbellate, 1–4-flowered;

bracts 1–8 cm.
Flowers

erect;

perianth open, campanulate;

sepals elliptic-lanceolate, 12–16 mm, glabrous, apex acuminate;

petals ± white to pink, often with purple blotch distal to gland, broadly obovate, cuneate, 15–28 mm, adaxial surface glabrous or sparsely hairy, margins irregularly dentate distally;

glands covered with ciliate membranes, bordered distally by short hairs;

filaments longer than anthers;

anthers oblong, apex obtuse or acute.

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, narrowly 3-winged, 1–3 cm.

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

dark brown, irregular.

light beige, flat.
2n

= 20, 40.

= 14, 28.

Calochortus uniflorus

Calochortus luteus
Phenology Flowering late spring–mid summer. Flowering late spring–mid summer.
Habitat Moist meadows Heavy soils in grasslands, open woodlands, mixed evergreen forests
Elevation 0–200 m (0–700 ft) 0–700 m (0–2300 ft)
Distribution
from FNA
CA; OR
[WildflowerSearch map]
[BONAP county map]
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
Discussion

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. 127. 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. umpquaensis, 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 Hooker & Arnott: Bot. Beechey Voy., 398, plate 94. (1840) 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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