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Calochortus macrocarpus

green-banded star tulip, sagebrush mariposa lily

Calochortus umpquaensis

Umpqua mariposa lily

Stems

20–55 cm long.

20–30 cm long, usually not branching.

Leaves

basal leaves linear, 5–10 cm long, glaucous;

margins revolute, withering.

basal leaves narrowly lanceolate; to 40 cm long;

upper surface pubescent;

cauline leaf 1, not prominent.

Inflorescences

1–2-flowered.

1–5-flowered;

bracts 2, subopposite, narrowly lanceolate.

Flowers

sepals lanceolate, 40–50 mm long;

petals obovate, 40–60 mm long, white to pink or purple, with a chevron or crescent or not; lower 33% of inner petal with yellow scattered hairs; outer petal surface with distinct green band;

nectary depressed, triangular;

filaments 8–9 mm long;

anthers to 10 mm long, pink to light purple.

sepals lanceolate-acuminate; to 20 mm long;

petals to 40 mm long, white to cream-colored, with dark purple crescent above nectary;

inner surface hairy throughout or sparsely hairy;

upper inner surface minutely papillose or not;

filaments 7 mm long;

anthers to 7 mm long.

Fruits

erect; lance-linear, 5–10 mm wide.

nodding, 3–5.5 cm long.

Seeds

wafer-like; straw-colored.

irregular-shaped, yellow.

2n

=20.

Calochortus macrocarpus

Calochortus umpquaensis

Distribution
[WildflowerSearch map]
[BONAP county map]
[WildflowerSearch map]
[BONAP county map]
Discussion

Southwestern Oregon. 3 subspecies.

Similar to C. howellii, this species is also a southwestern Oregon endemic found on serpentine soils. They differ in that C. umpquaensis has nodding fruits and petals up to 40 mm long, whereas C. howellii has erect fruits and shorter petals, to 25 mm long.

Source Flora of Oregon, volume 1, page 295
Frank Callahan
Flora of Oregon, volume 1, page 296
Frank Callahan
Sibling taxa
C. amabilis, C. bruneaunis, C. coeruleus, C. coxii, C. elegans, C. eurycarpus, C. greenei, C. howellii, C. indecorus, C. leichtlinii, C. longebarbatus, C. luteus, C. monophyllus, C. nitidus, C. nudus, C. persistens, C. subalpinus, C. tolmiei, C. umpquaensis, C. uniflorus
C. amabilis, C. bruneaunis, C. coeruleus, C. coxii, C. elegans, C. eurycarpus, C. greenei, C. howellii, C. indecorus, C. leichtlinii, C. longebarbatus, C. luteus, C. macrocarpus, C. monophyllus, C. nitidus, C. nudus, C. persistens, C. subalpinus, C. tolmiei, C. uniflorus
Subordinate taxa
C. macrocarpus var. macrocarpus, C. macrocarpus var. maculosus
C. umpquaensis ssp. confertus, C. umpquaensis ssp. flavicomus, C. umpquaensis ssp. umpquaensis
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