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Jepson Interchange (more information)
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CRASSULACEAE

STONECROP FAMILY

Annual to subshrubs, fleshy
Leaves generally simple, generally basal and cauline, alternate or opposite, generally reduced upward
Inflorescence: generally cyme, generally bracted
Flower: sepals generally 3–5, generally ± free; petals generally 3–5, ± free or fused; stamens = to >> sepals, free or epipetalous; pistils generally 3–5, simple (sometimes fused at base), ovary 1-chambered, placenta 1, parietal, ovules 1–many, style 1
Fruit: follicles generally 3–5
Seeds 1–many, small
Genera in family: ± 30 genera, ± 1500 species: ± worldwide, especially dry temp; many cultivated for ornamental. Family description and generic key by Melinda F. Denton and Reid Moran.

DUDLEYA

Jim A. Bartel

Perennial, fleshy, glabrous
Stem generally caudex or corm-like, generally vertical, branched or not, generally covered with dried leaves or leaf bases
Leaves in basal rosettes, evergreen vernal and ephemeral
Inflorescence: cyme, axillary, 1-sided; bracts leaf-like, alternate
Flower: sepals 5, fused below; petals 5, fused at base, erect to spreading above; stamens 10, epipetalous; pistils 5, ± fused below
Fruit: follicles 5, erect to spreading, many-seeded
Seed < 1 mm, narrowly ovoid, brown, striate
Species in genus: ± 45 species: sw North America
Etymology: (W.R. Dudley, western US botanist, 1849–1911)
Reference: [Moran in Jacobsen 1960 Handb Succ Plant:344–359]
Unopened follicles generally most reliable for posture (erect, spreading, etc.).

Native

D. blochmaniae (Eastw.) Moran


Stem corm-like
Leaf 1–6 cm, ± oblanceolate to spoon-shaped, base 1–4 mm wide; tip acute to rounded
Inflorescence: 1° branches 2–3, simple or forked 1 X ; peduncle 2–22 cm, 0.5–2 mm wide; terminal branches 1–6 cm, 3–10-flowered; pedicel < 1 mm
Flower: sepals 1.5–4 mm, deltate-ovate; petals spreading from base, 5–10 mm, elliptic, acute, white, keel often red-lined
Fruit: follicles spreading
Ecology: Open, coastal
Elevation: < 450 m.
Bioregional distribution: s Central Coast, South Coast, n Channel Islands
Distribution outside California: n Baja California

Native

subsp. blochmaniae

BLOCHMAN'S DUDLEYA


Stem: caudex 7–25 mm, 4–15 mm wide, ± spheric to fusiform
Leaves 3–12 per rosette, 1–6 cm, 3–8 mm wide, 2–4 mm thick, ± oblanceolate
Inflorescence: peduncle > 4 cm; bract deltate-lanceolate to -ovate
Chromosomes: n=17,34,51
Ecology: Open, rocky slopes, often serpentine or clay-dominated
Elevation: < 450 m.
Bioregional distribution: s Central Coast, South Coast
Distribution outside California: n Baja California
Horticultural information: In cultivation.

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