Flora of North America species comparison

The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

Calochortus howellii

Calochortus weedii
Calochortus howellii

Howell's mariposa lily

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

slender, not branching or rarely branching in axil of cauline leaf, straight, 2–4 dm.

slender, usually branching, 3–9 dm.
Leaves

basal persistent, 20–35 cm;

blade gradually tapering distally, adaxially pubescent.

basal withering, 2–4 dm;

blade linear to lanceolate.
Inflorescences

subumbellate, 1–3-flowered;

bracts 2, subopposite, linear to narrowly lanceolate, attenuate, 1–3 cm.

2–6-flowered;

bracts resembling distal cauline leaves.
Flowers

erect;

perianth open, campanulate;

sepals shorter than petals, ovate-acuminate, glabrous;

petals yellowish white, with purplish hairs toward base, broadly obovate, cuneate, inconspicuously fringed laterally, sparingly short-hairy adaxially, apex rounded;

glands transversely oblong, slightly depressed, densely covered with short, distally branching hairs, the bases of which unite at lower margin to form inconspicuous, discontinuous membranes;

filaments shorter than anthers;

anthers oblong-lanceolate, apex acute to short-apiculate.

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, 3-winged, ellipsoid, ca. 2 cm, base and apex acute.

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

light-colored, irregular.

light beige.
2n

= 20.

= 18.

Calochortus howellii

Calochortus weedii
Phenology Flowering late spring–mid summer.
Habitat Dry, rocky, serpentine soils
Elevation 300–500 m (1000–1600 ft)
Distribution
from FNA
OR
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; Mexico (Baja California)
[WildflowerSearch map]
[BONAP county map]
Discussion

Calochortus howellii is known only from the Illinois River valley, Josephine County.

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

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. 129. FNA vol. 26, p. 141.
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. 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
Name authority S. Watson: Proc. Amer. Acad. Arts 23: 266. (1888) 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).



Type/paste one or more Latin names into the boxes above; matching taxa will show up below the box as you type. You can use the up/down arrow keys to move through the list.

(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Apiaceae, Boraginaceae, and Polemoniaceae.)

Choose a data source: Flora of North America, OregonFlora

The species comparison tool is brought to you by:
Northwest Wildflowers