Flora of North America species comparison

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Calochortus umbellatus

Calochortus dunnii

Oakland mariposa lily, Oakland star-tulip

Dunn's mariposa-lily
Habit Plants rarely bulbose; bulb coat, when present, membranous.
Stems

usually branching, 8–25 cm, not bearing bulblets.

slender, usually branching, ± straight, 2–6 dm.
Leaves

basal persistent, 2–4 dm;

blade lanceolate, flat;

cauline usually present.

basal withering, 1–2 dm;

blade linear-attenuate, channeled.
Inflorescences

subumbellate, 3–12-flowered.

2–6-flowered;

bracts 1–2 cm.
Flowers

± erect;

perianth open, campanulate;

sepals 10–14 mm;

petals white to pale pink, usually with purple blotch near gland, widely obovate to cuneate, 12–18 mm, adaxial surface not ciliate, ± glabrous, margins irregularly dentate distally;

glands basally convex, covered by broad, ciliate membrane, bordered distally by short hairs;

filaments longer than anthers;

anthers oblong, apex acute or obtuse.

erect;

perianth open, campanulate;

sepals lanceolate-ovate, 1–2 cm;

petals white, usually flushed pink, with red-brown blotch distal to gland, obovate to cuneate, 2–3 cm, usually rounded distally, with yellowish hairs near gland;

glands rounded, not depressed, covered with linear yellow hairs;

filaments 5–6 mm;

anthers white, oblong, 4–5 mm, apex acute.
Capsules

nodding, 3-winged, 1–2 cm.

erect, linear, angled in cross section, 2–3 cm.
Seeds

dark brown, irregular.

2n

= 20.

= 14.

Calochortus umbellatus

Calochortus dunnii
Phenology Flowering early spring–early summer. Flowering mid summer.
Habitat Openings in chaparral or woods, often on serpentine Dry stony ridges in chaparral and pine forest
Elevation 100–700 m (300–2300 ft) 1500–1700 m (4900–5600 ft)
Distribution
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; Mexico (Baja California)
[BONAP county map]
Discussion

Calochortus umbellatus grows around San Francisco Bay. It is reported also from Lake County.

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

Of conservation concern.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 26, p. 127. FNA vol. 26.
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. 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. coxii, 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. palmeri var. dunnii
Name authority Alph. Wood: Proc. Acad. Nat. Sci. Philadelphia 20: 168. (1868) Purdy: Proc. Calif. Acad. Sci., ser. 3, 2: 147, plate 19, figs. 14, 17. (1901)
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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