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Pacific jewelflower

Habit Perennials; (caudex branched); glabrous, (sepals and leaf blade apices pubescent).
Stems

(sometimes ascending), unbranched or branched (few), 1.5–8(–9.2) dm.

Basal leaves

subrosulate (in juvenile plants); shortly petiolate;

blade obovate, 1–2.7 cm (5–14 mm wide), margins dentate apically (teeth with relatively short, bristly trichomes).

Cauline leaves

blade (fleshy), broadly ovate to orbicular, 0.7–3.5 cm × 5–24 mm (not smaller distally), base auriculate to amplexicaul, (proximally overlapping, distally not overlapping), margins usually entire, (apex obtuse).

Racemes

ebracteate, (lax in fruit).

Flowers

calyx campanulate;

sepals (ascending), yellowish green (in bud) or purple (in flower), (ovate), 4–7 mm, not keeled, (apex with short, bristly, flattened trichomes);

petals purplish (with darker veins), 5–9 mm, blade 0.5–3 × 0.3–0.7 mm, margins slightly crisped, claw 4–7 mm, wider than blade;

stamens in 3 unequal pairs;

filaments (distinct): abaxial pair 4–6 mm, lateral pair 3–5 mm, adaxial pair 5–7 mm;

anthers (all) fertile, 2.5–3.5 mm;

gynophore 1–3 mm.

Fruiting pedicels

erect to ascending, (straight), 3–8 mm.

Fruits

erect to ascending, smooth, often strongly recurved distally, distinctly flattened, 2–7(–8.2) cm × 2–3 mm;

valves each with obscure midvein (sometimes not basally, margins somewhat thickened);

replum straight;

ovules 16–30 per ovary;

style 0.4–1 mm;

stigma entire.

Seeds

oblong to broadly ovoid, 3–4 × 1.7–2 mm;

wing (0–)0.1–0.25 mm wide at apex, (narrower at margin).

2n

= 28, 56.

Streptanthus barbatus

Phenology Flowering Jun–Aug.
Habitat Dry, open Jeffrey pine woods, gravelly serpentine grounds in forest openings
Elevation 800-2200 m (2600-7200 ft)
Distribution
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
Discussion

Streptanthus barbatus is known from Siskiyou, Tehama, and Trinity counties.

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

Source FNA vol. 7, p. 704.
Parent taxa Brassicaceae > tribe Thelypodieae > Streptanthus
Sibling taxa
S. barbiger, S. batrachopus, S. bernardinus, S. brachiatus, S. bracteatus, S. breweri, S. callistus, S. campestris, S. carinatus, S. cordatus, S. cutleri, S. diversifolius, S. drepanoides, S. farnsworthianus, S. fenestratus, S. glandulosus, S. gracilis, S. hesperidis, S. hispidus, S. howellii, S. hyacinthoides, S. insignis, S. longisiliquus, S. maculatus, S. morrisonii, S. oblanceolatus, S. oliganthus, S. petiolaris, S. platycarpus, S. polygaloides, S. squamiformis, S. tortuosus, S. vernalis, S. vimineus
Synonyms Cartiera barbata
Name authority S. Watson: Proc. Amer. Acad. Arts 25: 125. (1890)
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