Dudleya cymosa subsp. agourensis

K. M. Nakai

Madroño 34: 339, fig. 2. 1988,.

EndemicConservation concern
Treatment appears in FNA Volume 8. Treatment on page 182. Mentioned on page 180.

Caudices simple or mostly cespitosely 1–5-branched, 0.5–1 cm diam. Leaves: rosettes 5–18-leaved; blade blue-gray, elliptic to oblong, 3–10 × 1–1.5 cm, apex acute to subacuminate, surfaces not farinose, glaucous. Inflorescences: floral shoots 12–25-leaved, 10–20 cm; cincinni 3+, 3–9-flowered, 1–3 cm. Petals bright-yellow, 10–12 × 3–4.5 mm. 2n = 34.


Phenology: Flowering late spring.
Habitat: North-facing slopes and roadcuts
Elevation: 200-500 m

Discussion

Of conservation concern.

Subspecies agourensis is found in the Santa Monica Mountains; it is considered fairly threatened (California Native Plant Society, http://cnps.web.aplus.net/cgi-bin/inv/inventory.cgi). The various forms of Dudleya cymosa found scattered in the Santa Monica Mountains have so far been sorted out as three subspecies—although here, as usual, they don’t sort neatly, and we are left wondering what will turn up next.

Selected References

None.

Lower Taxa

None.
perigynous +  and hypogynous +
acute +  and subacuminate +
Reid V. Moran +
K. M. Nakai +
0.5cm +  and 3cm +
Echeveria cymosa +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
3 cm30 mm <br />0.03 m <br /> (10 cm100 mm <br />0.1 m <br />) +
lobed +  and toothed +
elliptic +  and oblong +
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 /> (1.5 cm15 mm <br />0.015 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 />) +
1-5-branched +  and simple +
0.2 cm2 mm <br />0.002 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 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 +
200-500 m +
30 cm300 mm <br />0.3 m <br /> (50 cm500 mm <br />0.5 m <br />) +
10 cm100 mm <br />0.1 m <br /> (20 cm200 mm <br />0.2 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 +
North-facing slopes and roadcuts +
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 +
10mm;12mm +
ascending +  and erect +
0.1 cm1 mm <br />0.001 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
Flowering late spring. +
(3-)4-5(-12)[-30+]-carpellate +
not gibbous +
cross-ribbed +  and ribbed +
1 +  and many +
Endemic +  and Conservation concern +
adnate +  and free +
antipetalous +
2-branched +  and simple +
distinct +
glaucous +  and not farinose +
Dudleya cymosa subsp. agourensis +
Dudleya cymosa +
subspecies +
outcurved +
cylindric +  and 5-gonal +
perennial +, biennial +  and annual +