Dudleya abramsii subsp. affinis

K. M. Nakai

Madroño 34: 349, fig. 4. 1987 ,.

Common names: San Bernardino Mountains dudleya
EndemicConservation concern
Treatment appears in FNA Volume 8. Treatment on page 185. Mentioned on page 183.

Caudices mostly simple, 1–1.5 cm diam. Leaves: rosettes solitary; blade oblanceolate to elliptic, ± laminar, 1.5–4 × 0.7–1.5 cm. Inflorescences: floral shoots 5–11 × 0.2–0.3 cm; proximalmost leaf-blades 5–10 mm; branches 2–3, simple. Pedicels 2–8 mm. Flowers: calyx 3–4 × 3–4 mm; petals connate 1.5–3 mm, pale-yellow, red-lineolate, 9–11 × 1.5–2 mm, tips spreading. 2n = 34.


Phenology: Flowering early summer.
Habitat: Granite, quartzite, rarely limestone
Elevation: 1800-2600 m

Discussion

Of conservation concern.

The type population of subsp. affinis is notable for its solitary, small rosettes of leaves wide for their length, but K. M. Nakai (1987) mentioned plants in Cushenbury Canyon with up to 50 rosettes.

Subspecies affinis is local in the northern part of the San Bernardino Mountains and considered fairly endangered (California Native Plant Society, http://cnps.web.aplus.net/cgi-bin/inv/inventory.cgi).

Selected References

None.

Lower Taxa

None.
perigynous +  and hypogynous +
acute +  and subacuminate +
Reid V. Moran +
K. M. Nakai +
0.5cm +  and 1.5cm +
elliptic or oblong to oblong-lanceolate or tapering +  and linear +
1.5 cm15 mm <br />0.015 m <br /> (4 cm40 mm <br />0.04 m <br />) +
lobed +  and toothed +
oblanceolate +  and elliptic +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
bifurcate +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
elongate +
whorled +, opposite +  and alternate +
2-10(-18)-flowered +
3 cm30 mm <br />0.03 m <br /> (15 cm150 mm <br />0.15 m <br />) +
San Bernardino Mountains dudleya +
5-gonal +  and tubular +
1-4-branched +
obpyramidal +
1800-2600 m +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
branched +  and simple +
erect;pendent +
erect;spreading +
Granite, quartzite, rarely limestone +
axillary +  and terminal +
sessile +, petiolate +  and subclasping +
alternate +  and crowded +
persistent +
0.4 cm4 mm <br />0.004 m <br /> (4 cm40 mm <br />0.04 m <br />) +
triangular-lanceolate +
0.2 cm2 mm <br />0.002 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
usually connivent;adjacent +
wider than tall +
semi-inferior +  and superior +
tenuinucellate +, crassinucellate +  and bitegmic +
0.5 cm5 mm <br />0.005 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
perigynous +  and hypogynous +
1.6 cm16 mm <br />0.016 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
pale-yellow +
9mm;11mm +
ascending +  and erect +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Flowering early summer. +
(3-)4-5(-12)[-30+]-carpellate +
not gibbous +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
not 10-20(-30)-leaved +
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 abramsii subsp. affinis +
Dudleya abramsii +
subspecies +
cylindric +  and 5-gonal +
perennial +, biennial +  and annual +