Flora of North America species comparison

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Calochortus clavatus

Calochortus clavatus var. pallidus

club hair mariposa, clubhair mariposa lily, slender mariposa lily
Photo is of parent taxon

clubhair mariposa lily, pale yellow mariposa
Habit Plants usually bulbose; bulb coat, when present, membranous.
Stems

slender or coarse, stout, branching or not, strongly flexuous, 3–10 dm.

coarse, flexuous, ca. 5–10 dm.
Leaves

basal withering, 1–2 dm;

blade linear.

not recurved.
Inflorescences

subumbellate, 1–6-flowered;

bracts 4–8 cm, bases dilated.

Flowers

erect;

perianth open, cup-shaped;

sepals usually with red-brown blotch at base, lanceolate-ovate, 2–4 cm, apex acute;

petals lemon to golden yellow, with transverse line distal to gland, broadly cuneate to obovate, 3–5 cm;

glands round, deeply depressed, densely covered with short hairs with branching, coralline tips, surrounded by conspicuously fringed membrane and club-shaped hairs;

filaments ca. 10 mm;

anthers purplish brown, oblong, 4–10 mm.

petals light yellow, longer than sepals, hairs not very knobby;

glands shallowly to moderately depressed;

anthers yellow to pale or medium purple.
Capsules

erect, lanceoloid-linear, angled, 6–9 cm, apex acuminate.

Seeds

light yellow, translucent, flat.

2n

= 16.

Calochortus clavatus

Calochortus clavatus var. pallidus
Phenology Flowering late spring–mid summer.
Habitat Dry, rocky slopes, chaparral, often on serpentine
Elevation 0–1300 m (0–4300 ft)
Distribution
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
from FNA
CA
[BONAP county map]
Discussion

Varieties 5 (5 in the flora).

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

Calochortus clavatus var. pallidus is known from the Great Valley and western Transverse Ranges.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key
1. Petals shorter than sepals; petal glands very deeply depressed.
var. avius
1. Petals longer than sepals; petal glands shallowly to moderately depressed.
→ 2
2. Stems straight, slender, usually 3 dm or shorter.
→ 2
2. Stems flexuous, coarse, usually 5–10 dm.
→ 3
3. Petals 3–4 cm, sparsely bearded; leaves not recurved.
var. gracilis
3. Petals 4–5 cm, bearded; leaves strongly recurved.
var. recurvifolius
4. Petals deep yellow, hairs very knobby; anthers deep purple.
var. clavatus
4. Petals light yellow, hairs not very knobby; anthers yellow to medium purple.
var. pallidus
Source FNA vol. 26, p. 138. FNA vol. 26, p. 139.
Parent taxa Liliaceae > Calochortus Liliaceae > Calochortus > Calochortus clavatus
Sibling taxa
C. albus, C. amabilis, C. ambiguus, C. amoenus, C. apiculatus, C. argillosus, C. aureus, C. bruneaunis, C. catalinae, 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. uniflorus, C. venustus, C. vestae, C. weedii, C. westonii
C. clavatus var. avius, C. clavatus var. clavatus, C. clavatus var. gracilis, C. clavatus var. recurvifolius
Subordinate taxa
C. clavatus var. avius, C. clavatus var. clavatus, C. clavatus var. gracilis, C. clavatus var. pallidus, C. clavatus var. recurvifolius
Synonyms Mariposa clavata Mariposa clavata var. pallida
Name authority S. Watson: Proc. Amer. Acad. Arts 14: 265. (1879) (Hoover) P. L. Fiedler & Zebell: Madroño 42: 406. (1995)
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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