Dudleya cespitosa

(Haworth) Britton & Rose

New N. Amer. Crassul., 27. 1903 (as caespitosa) ,.

Common names: Coast dudleya sand-lettuce
Endemic
Basionym: Cotyledon cespitosa Haworth Misc. Nat., 180. 1803
Treatment appears in FNA Volume 8. Treatment on page 190. Mentioned on page 179, 189.

Caudices branched apically loosely or cespitosely, to 30 × 1–4 cm, axillary branches absent. Leaves: rosettes 3–150+, in clumps, 15–30 (–50) -leaved, 5–20 (–30) cm diam.; blade green, oblong to oblong-oblanceolate, 5–20 × 0.5–4 cm, 3–8 mm thick, base 0.5–4 cm wide, apex acute to subacuminate, surfaces not farinose, sometimes glaucous. Inflorescences: cyme ca. 3-branched, mostly obpyramidal; branches not twisted (flowers on topside), simple or 1–2 times bifurcate, (3–6 cm diam.); cincinni 3–5, 3–14-flowered, circinate, 3–11 cm; floral shoots 10–40 × 0.4–1.2 cm; leaves 12–25, spreading to ascending, triangular-ovate to lanceolate, 10–60 × 10–30 mm, apex acute. Pedicels erect, not bent in fruit, mostly 1–5 mm. Flowers: calyx 4–6 × 4–8 mm; petals connate 1.5–2.5 mm, mostly bright-yellow to red, 8–16 × 2.5–5 mm, apex acute, tips erect; pistils connivent, erect. Unripe follicles erect. 2n = 68, 101, 136.


Phenology: Flowering late spring–early summer.
Habitat: Cliffs and rocky slopes near coast
Elevation: 0-600 m

Discussion

As circumscribed here, Dudleya cespitosa is a highly variable polyploid complex delimited from neighboring species and not easily divisible on the basis of morphology, distribution, and chromosome number into practical subspecific units.

Selected References

None.

Lower Taxa

None.
... more about "Dudleya cespitosa"
136 +, 101 +  and 68 +
perigynous +  and hypogynous +
acute +  and subacuminate +
Reid V. Moran +
(Haworth) Britton & Rose +
0.5cm +  and 4cm +
Cotyledon cespitosa +
lobed +  and toothed +
oblong +  and oblong-oblanceolate +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
1-2 times bifurcate +, simple +  and not twisted +
bifurcate +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
elongate +
whorled +, opposite +  and alternate +
3 cm30 mm <br />0.03 m <br /> (11 cm110 mm <br />0.11 m <br />) +
Coast dudleya +  and sand-lettuce +
5-gonal +  and tubular +
obpyramidal +
0-600 m +
0.4 cm4 mm <br />0.004 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
branched +  and simple +
erect;pendent +
erect;spreading +
Cliffs and rocky slopes near coast +
axillary +  and terminal +
sessile +, petiolate +  and subclasping +
alternate +  and crowded +
persistent +
1 cm10 mm <br />0.01 m <br /> (6 cm60 mm <br />0.06 m <br />) +
spreading +  and ascending +
triangular-ovate +  and lanceolate +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
usually connivent;adjacent +
wider than tall +
semi-inferior +  and superior +
tenuinucellate +, crassinucellate +  and bitegmic +
0.1 cm1 mm <br />0.001 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
perigynous +  and hypogynous +
mostly bright-yellow +  and red +
8mm;16mm +
ascending +  and erect +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Flowering late spring–early summer. +
(3-)4-5(-12)[-30+]-carpellate +
not gibbous +
New N. Amer. Crassul., +
15-30(-50)-leaved +
cross-ribbed +  and ribbed +
1 +  and many +
adnate +  and free +
antipetalous +
2-branched +  and simple +
distinct +
glaucous +  and not farinose +
Dudleya cespitosa +
Dudleya subg. Dudleya +
species +
cylindric +  and 5-gonal +
perennial +, biennial +  and annual +