Flora of North America species comparison

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Calochortus umbellatus

Oakland mariposa lily, Oakland star-tulip
Stems

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

basal persistent, 2–4 dm;

blade lanceolate, flat;

cauline usually present.
Inflorescences

subumbellate, 3–12-flowered.
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.
Capsules

nodding, 3-winged, 1–2 cm.
Seeds

dark brown, irregular.
2n

= 20.

Calochortus umbellatus
Phenology Flowering early spring–early summer.
Habitat Openings in chaparral or woods, often on serpentine
Elevation 100–700 m (300–2300 ft)
Distribution
from FNA
CA
[WildflowerSearch map]
[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.)
Source FNA vol. 26, p. 127.
Parent taxa 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
Name authority Alph. Wood: Proc. Acad. Nat. Sci. Philadelphia 20: 168. (1868)
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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