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Tiburon mariposa-lily

sego-lily

Habit Plants usually bulbose; bulb coat, when present, membranous.
Stems

usually branching, 1–6 dm.

usually not branching or twisted, straight, 1.5–4.5 dm.

Leaves

basal persistent, 1–7 dm;

blade lanceolate, flat.

blade linear, becoming involute;

basal withering.

Inflorescences

2–several-flowered.

subumbellate, 1–4-flowered;

bracts congested, unequal.

Flowers

erect;

perianth open, campanulate;

petals light yellow-green, flecked and streaked purplish brown, oblanceolate, ciliate to near apex, hairy;

glands depressed, bordered proximally by ciliate membrane, distally by 2 or more rows of short hairs;

anthers short-tipped.

erect;

perianth open, campanulate;

sepals marked similar to petals, usually shorter, lanceolate, glabrous, apex acuminate;

petals white, tinged with lilac or infrequently magenta, yellow at base, with reddish brown or purple band or blotch distal to gland, broadly obovate, cuneate, sparsely invested near gland with slender hairs, apex usually short-acuminate;

glands round, depressed, surrounded by conspicuously fringed membrane, densely covered with short, unbranched or distally branching hairs;

filaments ca. equaling anthers;

anthers yellowish or pinkish, oblong, apex obtuse.

Capsules

erect, angled, apex acute.

erect, linear-lanceoloid, 3-angled, apex acuminate.

Seeds

dark brown, irregular.

flat.

2n

= 20.

= 16.

Calochortus tiburonensis

Calochortus nuttallii

Phenology Flowering late spring–early summer. Flowering late spring–late summer.
Habitat Serpentine grasslands Dry soils
Elevation 0–200 m (0–700 ft) 700–3300 m (2300–10800 ft)
Distribution
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
from FNA
AZ; CO; ID; MT; ND; NE; NM; NV; SD; UT; WY
[WildflowerSearch map]
[BONAP county map]
Discussion

Of conservation concern.

Calochortus tiburonensis is known only from Ring Mountain, Marin County.

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

Source FNA vol. 26, p. 131. FNA vol. 26, p. 136.
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. 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. 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. 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
Name authority A. J. Hill: Madroño 22: 100, fig. 1. (1973) Torrey: in H. Stansbury, Exped. Great Salt Lake, 397. (1852)
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