Dudleya multicaulis

(Rose) Moran

Leafl. W. Bot. 7: 110. 1953,.

EndemicConservation concern
Basionym: Hasseanthus multicaulis Rose in N. L. Britton and J. N. Rose, New N. Amer. Crassul., 38. 1903
Synonyms: Hasseanthus elongatus Rose Hasseanthus variegatus var. elongatus (Rose) I. M. Johnston
Treatment appears in FNA Volume 8. Treatment on page 193. Mentioned on page 192.

Corms oblong, 1.5–5 cm × 3–18 mm. Leaves 5–15, base scarcely narrowed into petiole; blade green, linear, 5–15 cm × 2–6 mm, 2–6 mm thick, base 4–10 mm wide, apex narrowly acute, surfaces not or somewhat glaucous. Inflorescences: cincinni 3–15-flowered, 2–10 cm; floral shoots 5–35 cm × 2–4 mm; leaves 7–18, strongly ascending, blade linear (similar to rosette leaf-blades), 1–10 cm × 2–10 mm, 2–6 mm thick, apex narrowly acute. Flowers odorless; petals connate 1–2 mm, spreading from near middle, bright-yellow (fading pale-yellow), often red-lineolate along keel, elliptic-lanceolate, 5–9 × 2–3 mm, apex acute, corolla 12–18 mm diam.; pistils connate 1–2 mm, ascending; ovary 3.5–6 mm; styles 1.5–2 mm. Follicles widespreading, with adaxial margins nearly horizontal. 2n = 34.


Phenology: Flowering late spring.
Habitat: Rocky hillsides, often in heavy soils
Elevation: 0-700 m

Discussion

Of conservation concern.

Dudleya multicaulis is endemic to the Los Angeles coastal plain and adjacent hills, Transverse and Peninsular ranges, and southward to the San Onofre Mountains of northern San Diego County, an area now largely urban; it is considered fairly endangered (California Native Plant Society, http://cnps.web.aplus.net/cgi-bin/inv/inventory.cgi).

Selected References

None.

Lower Taxa

None.
... more about "Dudleya multicaulis"
perigynous +  and hypogynous +
Reid V. Moran +
(Rose) Moran +
narrowed +
4mm +  and 10mm +
Hasseanthus multicaulis +
lobed +  and toothed +
turgid +  and terete +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
whorled +, opposite +  and alternate +
2 cm20 mm <br />0.02 m <br /> (10 cm100 mm <br />0.1 m <br />) +
unbranched +  and tuberous +
1.5 cm15 mm <br />0.015 m <br /> (5 cm50 mm <br />0.05 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
1.2 cm12 mm <br />0.012 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
0-700 m +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
branched +  and simple +
odorless +
erect;pendent +
widespreading +
erect;spreading +
Rocky hillsides, often in heavy soils +
axillary +  and terminal +
sessile +, petiolate +  and subclasping +
alternate +  and crowded +
persistent +
wider than tall +
semi-inferior +  and superior +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
tenuinucellate +, crassinucellate +  and bitegmic +
0 cm0 mm <br />0 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
perigynous +  and hypogynous +
bright-yellow +
elliptic-lanceolate +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Flowering late spring. +
(3-)4-5(-12)[-30+]-carpellate +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Leafl. W. Bot. +
cross-ribbed +  and ribbed +
1 +  and many +
Endemic +  and Conservation concern +
adnate +  and free +
antipetalous +
2-branched +  and simple +
underground +
distinct +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Hasseanthus elongatus +  and Hasseanthus variegatus var. elongatus +
Dudleya multicaulis +
Dudleya subg. Hasseanthus +
species +
cylindric +  and 5-gonal +
perennial +, biennial +  and annual +