Vancouveria chrysantha
Vancouveria
golden inside-out flower, Siskiyou inside-out-flower, yellow vancouveria
inside-out-flower
extensive, creeping, nodose, producing 3 or more foliage leaves and flowering shoots per year.
absent.
persistent, 2-ternately compound or 3-5-foliolate, 10-18 cm;
petiole 3-12 cm, sparsely hairy.
blade deltate in overall outline;
rachis without pulvinae;
leaflet blades rhomboid or rounded pentagonal to ovate to oblong, shallowly 3-lobed, margins entire to sinuate;
venation palmate.
blades ovate to oblong, slightly 3-lobed, leathery, base cordate, margins thickened, crisped, apex notched;
surfaces abaxially pubescent, glaucous, adaxially glabrous to rarely pubescent.
peduncle 2-3 dm;
pedicel 1-4 cm, stipitate-glandular.
terminal, racemes or panicles, open.
4-15;
bracteoles 6-9, tan to brown, 1-4 mm, caducous, stipitate-glandular;
sepals 6, yellow, spatulate, 6-10 mm, stipitate-glandular;
petals 6, yellow, 4-6 mm, margins entire, apex strongly reflexed, apical nectary darker yellow;
filaments stipitate-glandular.
3-merous, 6-14 mm;
bracteoles 6-9, sepaloid;
sepals 6, white to yellow;
petals 6, white to yellow, hooded with tip reflexed or flat, bearing nectar;
stamens 6;
anthers dehiscing by 2 apically hinged flaps;
pollen exine striate;
ovaries ellipsoid;
placentation marginal;
style lateral.
follicles, brown, asymmetric, generally elliptic, dehiscing by 2 valves.
3-10, reddish brown, reniform to oblong, 3-4 mm.
4-7, black to reddish brown;
aril whitish, covering ca. 1/2-2/3 of seed.
greenish brown, 8-15 mm including beak, beak 3-4 mm, densely stipitate-glandular.
= 6.
= 12.
Vancouveria chrysantha
Vancouveria
Species 3 (3 in the flora).
The fruits of Vancouveria are thin-walled follicles that are green or greenish brown at the time of dehiscence. The follicles dehisce by means of two valves that begin below the style and open to the base. The two valves recurve, exposing the seeds downward. In V. hexandra the follicle opens before the seeds are mature. The green seeds continue to grow and ripen in the open follicle. The appendage or aril on Vancouveria seeds has been shown to elaiosome (R. Y. Berg 1972). Ants carry the seeds to their nests and harvest the appendage as a food source.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Leaflet margins not conspicuously thickened; leaves falling when fruits maturing; pedicels lacking glands. | V. hexandra |
1. Leaflet margins conspicuously thickened; leaves persistent; pedicels stipitate-glandular. | → 2 |
2. Petals yellow, petal apex reflexed; follicles densely stipitate-glandular. | V. chrysantha |
2. Petals white, sometimes lavender-tinged, petal apex not reflexed; follicles lacking glands. | V. planipetala |
CA
OR
Flora NW
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
WA
