Eremogone macradenia var. arcuifolia

(Maguire) R. L. Hartman & Rabeler

Sida 21: 240. 2004.

Endemic
Basionym: Arenaria macradenia var. arcuifolia Maguire Bull. Torrey Bot. Club 74: 51. 1947
Synonyms: Arenaria kuschei Eastwood Arenaria macradenia var. kuschei (Eastwood) Maguire Eremogone macradenia var. kuschei (Eastwood) R. L. Hartman & Rabeler
Treatment appears in FNA Volume 5. Treatment on page 69. Mentioned on page 68.

Cauline leaves in 6–12+ pairs; blade curved downward, especially proximal ones, 1.2–2 mm wide. Inflorescences: branches erect to ascending. Flowers: sepals 4.5–7 mm, to 7 mm in fruit, ± glabrous or sparsely to rarely densely stipitate-glandular; nectaries narrowly longitudinally rectangular, truncate, 0.7–0.8 mm, densely minutely pubescent with erect to spreading hairs.


Phenology: Flowering late spring–early summer.
Habitat: Dry slopes and foothills, dry, yellow pine and oak forests
Elevation: 600-2400 m

Discussion

While B. Maguire (1947, 1951) regarded var. arcuifolia as “a strongly marked variant,” R. L. Hartman (1993) noted that it “intergrades with var. macradenia and might be considered the same as the latter.”

The collection from “Forest Camp” described as Arenaria macradenia var. kuschei differs from var. arcuifolia in having densely stipitate-glandular pedicels and sepals; it does not deserve taxonomic recognition. Recently, populations of plants matching var. kuschei were discovered in the Liebre Mountains, northwestern Los Angeles County (T. S. Ross and S. Boyd 1996b). Four of the seven populations were mixed, some individuals having the stipitate-glandular pubescence of var. kuschei, and others, the glabrous inflorescences of var. arcuifolia. Furthermore, there was an east-to-west trend along the summit of Liebre Mountain from populations with a low frequency of glandular individuals to populations that were strictly glandular (Boyd, pers. comm.).

Selected References

None.

Lower Taxa

None.

"-2timesaslongassepals" is not declared as a valid unit of measurement for this property.

erose +  and entire +
spinose +  and apiculate +
glabrous +  and sparsely stipitate-glandular +
Ronald L. Hartman +, Richard K. Rabeler +  and Frederick H. Utech +
(Maguire) R. L. Hartman & Rabeler +
6 cm60 mm <br />0.06 m <br /> (7 cm70 mm <br />0.07 m <br />) +
2 cm20 mm <br />0.02 m <br /> (6 cm60 mm <br />0.06 m <br />) +
linear +  and needlelike +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Arenaria macradenia var. arcuifolia +
filiform +  and subulate or narrowly linear +
? (?) +  and ? (?) +
1.2mm;2mm +
reduced +
erect +  and ascending +
ovoid;urceolate +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
dish--shaped +
expanded +
600-2400 m +
straight +  and curved +
central +  and peripheral +
inconspicuous +
unisexual +  and bisexual +
stalked +  and simple +
Dry slopes and foothills, dry, yellow pine and oak forests +
erect +  and spreading +
disc--shaped +  and dish +
3-20(-30)-flowered +
connate +
narrow +  and broad +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
swollen +
3 +  and 5 +
crassinucellate +  and bitegmic +
campylotropous +
stipitate-glandular +  and glabrous +
0.3 cm3 mm <br />0.003 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
fugacious +
0.6 cm6 mm <br />0.006 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
Flowering late spring–early summer. +
tuberculate +
suborbicular +  and pyriform or ovoid +
persistent +
connate +  and distinct +
less glabrous or +  and sparsely rarely densely stipitate-glandular +
ovate;lanceolate or elliptic +
0 cm0 mm <br />0 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
branched +  and simple +
20 cm200 mm <br />0.2 m <br /> (40 cm400 mm <br />0.4 m <br />) +
[50 +  and 3 +
smooth +  and papillate +
distinct +
filiform +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Arenaria kuschei +, Arenaria macradenia var. kuschei +  and Eremogone macradenia var. kuschei +
Stout (?) +  and Slender (?) +
Eremogone macradenia var. arcuifolia +
Eremogone macradenia +
variety +
ascending;recurved +
divided +
rounded +  and conic +
10 +  and 8 +
rhizomatous +  and taprooted +