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Streptanthus fenestratus
(Greene) J.T. Howell
Family:
Brassicaceae
Tehipite Valley Jewelflower
FNA
Resources
Ihsan A. Al-Shehbaz in Flora of North America (vol. 7)
Annuals;
(glaucous), glabrous throughout.
Stems
unbranched or branched proximally, (0.5-)1-2(-3.5) dm
. Basal leaves
rosulate; petiolate (petioles slender); blade 1- or 2-pinnatisect, 1.5-6 cm.
Cauline leaves:
blade ovate to lanceolate, similar to basal, base auriculate proximally, amplexicaul distally, margins usually coarsely dentate or entire, rarely pinnatifid (not divided into filiform segments, entire distally).
Racemes
bracteate below or between proximalmost 1 or 2 flowers.
Fruiting pedicels
divaricate-ascending, (straight), 2-7 mm.
Flowers:
calyx tubular-urceolate; sepals purple, 5-7 mm, slightly keeled or not, (apex recurved); petals rose-purple, 9-15 mm, blade 3-6 × 2.5-3.5 mm, margins not crisped, claw 6-9 mm, narrower than blade; stamens in 3 unequal pairs; filaments (distinct): abaxial pair 3-4 mm, lateral pair 1.5-2.5 mm, adaxial pair 5-7 mm, (recurved); anthers (all) fertile, 2-2.5 mm; gynophore 0.2-2.5 mm.
Fruits
usually ascending to divaricate, rarely reflexed, smooth or slightly torulose, slightly flattened, 2-5 cm × 1.2-1.7 mm; valves each with obscure midvein; replum straight; ovules 22-38 per ovary; style 0.1-1 mm; stigma entire.
Seeds
oblong, 1-1.5 × 0.7-0.9 mm; wing (0-)0.05-0.1 mm wide, distal.
2
n
= 28.
Flowering May-Jun. Granitic ledges and sand, gruss deposits in open pine forest; of conservation concern; 1100-1800 m; Calif.
Streptanthus fenestratus
is known from Kings Canyon, Fresno County.
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