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Blochman's dudleya, Blochman's liveforever

munchkin dudleya, munchkin liveforever

Caudices

branching apically, (cespitose), 0.5–2.6 × (0.1–)1.2–2 cm, axillary branches absent.

Leaves

3–50;

petiole 0.3–1.5 mm wide, to 1/3 as wide as blade;

blade green, oblanceolate or clavate-oblanceolate, 1–6 cm × 2–8 mm, 1–4 mm thick, base 1–4 mm wide, apex subacute to rounded, surfaces sometimes ± glaucous.

rosettes 1–60, in clumps, 8–20-leaved, 0.8–5.1 cm diam.;

blade green, becoming reddish, triangular-ovate, (0.6–)0.9–2 × 0.5–1.3 cm, 2–4 mm thick, base 0.7–1.5 cm wide, apex acute, surfaces farinose, heavily glaucous.

Inflorescences

cincinni 3–10-flowered, 1–6 cm;

floral shoots 3–12 cm × 0.5–2 mm;

leaves 8–25, ascending, blade triangular-ovate to -lanceolate, 0.5–2.5 cm × 3–10 mm, 2–4 mm thick, apex rounded to subacute or obtuse.

cyme 2-branched, broadly obpyramidal or flat-topped;

branches not twisted (flowers on topside), simple or 1 times bifurcate, (0.3–0.6 cm diam.);

cincinni 2–6, 3–7-flowered, circinate, 1–3 cm;

floral shoots 2.5–13 × 0.3–0.5 cm;

leaves 6–15, spreading, triangular-ovate, 5–10 × 4–6 mm, apex acute.

Pedicels

erect, not bent in fruit, 1–3 mm.

Flowers

with musky, sweet odor;

petals connate to 1 mm, widely spreading from near middle, white, ± yellowish green at base, red-lineolate on keel, drying purplish, elliptic, 6–10[–12] × 2–3.5[–5] mm, apex acute, corolla 8–20 mm diam.;

pistils separate, ascending;

ovary 3–4.5 mm;

styles 1–1.5 mm.

calyx 3–4 × 4–5 mm;

petals connate 1–1.5 mm, pale to medium yellow, 9–10 × 2–3 mm, apex acute, tips slightly outcurved;

pistils connivent, erect.

Corms

subglobose to oblong, 0.7–3.5 cm × 5–20 mm.

Follicles

widespreading, with adaxial margins nearly horizontal.

Unripe

follicles erect.

2n

= 68.

Dudleya blochmaniae

Dudleya gnoma

Phenology Flowering late spring.
Habitat Thin, gravelly volcanic soil
Elevation 20-70 m (100-200 ft)
Distribution
from FNA
CA; nw Mexico
[WildflowerSearch map]
[BONAP county map]
from FNA
CA
[BONAP county map]
Discussion

Subspecies 2 (2 in the flora).

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

Of conservation concern.

Dudleya gnoma is known from near East Point on Santa Rosa Island and is considered seriously endangered (California Native Plant Society, http://cnps.web.aplus.net/cgi-bin/inv/inventory.cgi). McCabe estimated the total number of plants at 3200. It is like a diminutive form of D. greenei, which grows on the same island. In nature, it is uniformly small and strikingly distinct, and although somewhat larger in cultivation, it remains distinct. It has the same chromosome number as some plants of D. greenei on the same island (C. H. Uhl and R. V. Moran 1953) and doubtless would be interfertile with them. The best taxonomic treatment is uncertain. It is often grown and makes an attractive plant. In gardens it has been known by the illegitimate name D. nana and is called “White Sprite.”

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

Key
1. Rosette leaves 3-12, blade oblanceolate, 1-4(-6) cm; inflorescence leaves not or slightly glaucous.
subsp. blochmaniae
1. Rosette leaves 15-30(-50), blade clavate-oblanceolate, 1-3.5 cm; inflorescence leaves gray-glaucous.
subsp. insularis
Source FNA vol. 8, p. 193. FNA vol. 8, p. 189.
Parent taxa Crassulaceae > Dudleya > subg. Hasseanthus Crassulaceae > Dudleya > subg. Dudleya
Sibling taxa
D. abramsii, D. arizonica, D. attenuata, D. brevifolia, D. candelabrum, D. cespitosa, D. cymosa, D. densiflora, D. edulis, D. farinosa, D. gnoma, D. greenei, D. lanceolata, D. multicaulis, D. nesiotica, D. palmeri, D. parva, D. pulverulenta, D. saxosa, D. stolonifera, D. traskiae, D. variegata, D. verityi, D. virens, D. viscida
D. abramsii, D. arizonica, D. attenuata, D. blochmaniae, D. brevifolia, D. candelabrum, D. cespitosa, D. cymosa, D. densiflora, D. edulis, D. farinosa, D. greenei, D. lanceolata, D. multicaulis, D. nesiotica, D. palmeri, D. parva, D. pulverulenta, D. saxosa, D. stolonifera, D. traskiae, D. variegata, D. verityi, D. virens, D. viscida
Subordinate taxa
D. blochmaniae subsp. blochmaniae, D. blochmaniae subsp. insularis
Synonyms Sedum blochmaniae, Hasseanthus blochmaniae, Hasseanthus variegatus var. blochmaniae
Name authority (Eastwood) Moran: Leafl. W. Bot. 7: 110. (1953) S. W. McCabe: Madroño 44: 49, fig. 1. 1997 ,
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