Dudleya cymosa subsp. pumila

(Rose) K. M. Nakai

Madroño 34: 336. 1988,.

Endemic
Basionym: Dudleya pumila Rose in N. L. Britton and J. N. Rose, New N. Amer. Crassul., 14. 1903
Synonyms: Dudleya goldmanii Rose
Treatment appears in FNA Volume 8. Treatment on page 181. Mentioned on page 180, 182.

Caudices simple or 2–5-branched, 1–2 (–3.5) cm diam. Leaves: rosettes usually 10–25-leaved; blade green, rhombic-oblanceolate to spatulate, 1.5–5 (–10) × 1–3 (–6) cm, apex mostly short-acuminate to cuspidate, surfaces sometimes farinose, glaucous. Inflorescences: floral shoots 5–20-leaved, 5–15 (–25) cm; cincinni 3+, 3–6-flowered, mostly 1–3 cm. Petals bright-yellow to red, 10–12 × 2.5–4 mm. 2n = 34.


Phenology: Flowering spring.
Habitat: Rock crevices, rocky slopes
Elevation: 100-2600 m

Discussion

Plants of subsp. pumila in the San Gabriel Mountains are rather uniformly small, with the rosette leaves rhomboid and short-acuminate to cuspidate. Taken by themselves, they would seem a quite well-distinguished subspecies, and many plants of the Santa Lucia Mountains are similar. Plants of the San Bernardino Mountains are similar but apparently more variable; in the Santa Lucia Mountains the plants are perhaps even more variable, some like subsp. cymosa. Thus there is no clear line between the two subspecies.

Selected References

None.

Lower Taxa

None.
perigynous +  and hypogynous +
mostly short-acuminate +  and cuspidate +
Reid V. Moran +
(Rose) K. M. Nakai +
0.5cm +  and 3cm +
Dudleya pumila +
5 cm50 mm <br />0.05 m <br /> (10 cm100 mm <br />0.1 m <br />) +
3 cm30 mm <br />0.03 m <br /> (6 cm60 mm <br />0.06 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (5 cm50 mm <br />0.05 m <br />) +
lobed +  and toothed +
rhombic-oblanceolate +  and spatulate +
0.1 cm1 mm <br />0.001 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
1-3 times bifurcate also with lateral branches +, simple +  and not twisted +
bifurcate +
1-3 times bifurcate also with lateral branches +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
2-5-branched +  and simple +
0.2 cm2 mm <br />0.002 m <br /> (1 cm10 mm <br />0.01 m <br />) +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
elongate +
1cm;3.5cm +
whorled +, opposite +  and alternate +
5 cm50 mm <br />0.05 m <br /> (17 cm170 mm <br />0.17 m <br />) +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
5-gonal +  and tubular +
2-4-branched +
obpyramidal +
100-2600 m +
30 cm300 mm <br />0.3 m <br /> (50 cm500 mm <br />0.5 m <br />) +
15 cm150 mm <br />0.15 m <br /> (25 cm250 mm <br />0.25 m <br />) +
5 cm50 mm <br />0.05 m <br /> (15 cm150 mm <br />0.15 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
branched +  and simple +
erect;pendent +
erect;spreading +
Rock crevices, rocky slopes +
axillary +  and terminal +
sessile +, petiolate +  and subclasping +
alternate +  and crowded +
persistent +
spreading +  and ascending +
usually connivent;adjacent +
wider than tall +
semi-inferior +  and superior +
tenuinucellate +, crassinucellate +  and bitegmic +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
perigynous +  and hypogynous +
bright-yellow +  and red +
10mm;12mm +
ascending +  and erect +
0.1 cm1 mm <br />0.001 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Flowering spring. +
(3-)4-5(-12)[-30+]-carpellate +
not gibbous +
cross-ribbed +  and ribbed +
1 +  and many +
adnate +  and free +
antipetalous +
2-branched +  and simple +
distinct +
glaucous +  and farinose +
Dudleya goldmanii +
Dudleya cymosa subsp. pumila +
Dudleya cymosa +
subspecies +
outcurved +
cylindric +  and 5-gonal +
perennial +, biennial +  and annual +