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Sibara filifolia
Greene
Family:
Brassicaceae
Santa Cruz Island Winged-Rockcress,
more...
Santa Cruz Island rockcress
[
Arabis filifolia
Greene]
Images
not available
FNA
Resources
Ihsan A. Al-Shehbaz in Flora of North America (vol. 7)
Plants
(glaucous), glabrous throughout.
Stems
unbranched or branched (few) distally, 1.5-3 dm.
Basal leaves
(not seen), withered by flowering.
Cauline leaves:
petiole 0.4-1.6 cm; blade margins pectinate or pinnatisect, lobes filiform to linear, 0.5-1.5 cm × 0.2-0.8 mm, margins entire.
Racemes
(lax); rachis flexuous.
Fruiting pedicels
divaricate-ascending, straight, (2-)3-10(-15) mm.
Flowers:
sepals 2.2-3 × 0.7-1 mm; petals purple or lavender, 3.5-6 × 2-3 mm, claw ca. 1.5 mm; median filaments 2-2.7 mm; anthers oblong, 0.6-0.8 mm.
Fruits
divaricate-ascending, straight, subtorulose, 2.5-4.1 cm × 0.7-0.9 mm; ovules 32-40 per ovary; style 0.5-0.8 mm.
Seeds
1-1.3 × 0.6-0.9 mm.
Flowering Apr. Dry ridges; of conservation concern; ca. 0 m; Calif.
Sibara filifolia
is known from Santa Cruz Island. It is in the Center for Plant Conservation´s National Collection of Endangered Plants.
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