Flora of North America species comparison

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Calochortus argillosus

Calochortus weedii

clay mariposa, clay mariposa lily

foothill mariposa lily, Weed's mariposa, Weed's mariposa lily
Habit Plants bulbose; bulb coat membranous. Plants usually bulbose; bulb coat fibrous-reticulate.
Stems

not branching, 4–6 dm.

slender, usually branching, 3–9 dm.
Leaves

basal withering, 2–3 dm;

blade linear.

basal withering, 2–4 dm;

blade linear to lanceolate.
Inflorescences

subumbellate, 1–4-flowers;

bracts 2–8 cm.

2–6-flowered;

bracts resembling distal cauline leaves.
Flowers

erect;

perianth open, campanulate;

sepals lanceolate, 2–4 cm, apex acute to acuminate;

petals white to purple, with median red blotch often surrounded by pale yellow, obovate to cuneate, rounded, 2–4 cm, with a few short hairs near gland, apex retuse to obtuse;

glands arched, transversely oblong to weakly lunate or ± rectangular, not depressed, densely covered with short hairs;

filaments 7–9 mm;

anthers lanceolate-linear to oblong, 8–10 mm, apex acute to obtuse.

erect;

perianth open, broadly campanulate;

sepals ovate to lanceolate, attenuate, 2–3 cm;

petals orange-yellow, flecked, broadly cuneate or obovate, ca. 2–3 cm, adaxially bearded with long yellow hairs, margins often red-brown, dentate or fringed;

glands round, slightly depressed, ± glabrous, surrounded by ring of long, dense, obscuring yellow hairs;

filaments 8–12 mm;

anthers lanceolate-oblong, apex acute.
Capsules

erect, narrowly lanceoloid, stout, 4–6 cm.

erect, linear, angled, 4–5 cm, apex acute.
Seeds

light beige, lanceolate, flat, 5–6 mm.

light beige.
2n

= 14.

= 18.

Calochortus argillosus

Calochortus weedii
Phenology Flowering late spring–mid summer.
Habitat Hard clay soil of volcanic or metamorphic rock
Elevation 0–400 m (0–1300 ft)
Distribution
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; Mexico (Baja California)
[WildflowerSearch map]
[BONAP county map]
Discussion

Varieties 4 (3 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key
1. Petals deep yellow.
var. weedii
1. Petals purplish or cream to red-brown.
→ 2
2. Petals purplish, apex rounded; anther apex rounded.
var. intermedius
2. Petals usually cream or red-brown, never purplish, apex squarish; anther apex abruptly apiculate.
var. vestus
Source FNA vol. 26, p. 134. FNA vol. 26, p. 141.
Parent taxa Liliaceae > Calochortus Liliaceae > Calochortus
Sibling taxa
C. albus, C. amabilis, C. ambiguus, C. amoenus, C. apiculatus, 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. 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. 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. westonii
Subordinate taxa
C. weedii var. intermedius, C. weedii var. vestus, C. weedii var. weedii
Synonyms Mariposa argillosa
Name authority (Hoover) Zebell & P. L. Fiedler: Madroño 39: 306. (1992) Alph. Wood: Proc. Acad. Nat. Sci. Philadelphia 20: 169. (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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