Eremogone ferrisiae

(Abrams) R. L. Hartman & Rabeler

Sida 21: 754. 2004.

Common names: Ferris’s sandwort
Endemic
Basionym: Arenaria macradenia subsp. ferrisiae Abrams in L. Abrams and R. S. Ferris, Ill. Fl. Pacific States 2: 151. 1944
Synonyms: Eremogone macradenia var. ferrisiae (Abrams) R. L. Hartman & Rabeler
Treatment appears in FNA Volume 5. Treatment on page 65. Mentioned on page 58.

Plants tufted, green, not glaucous, with woody base. Stems erect, (10–) 20–40 (–100) cm, glabrous to stipitate-glandular. Leaves: basal leaves sparse or absent; cauline leaves usually in 5–7 pairs, not significantly reduced; basal blades ascending, needlelike or narrowly linear, 2–6 (–7) cm × 0.5–1 mm, ± rigid, herbaceous to subsucculent, apex blunt to spinose, usually glabrous, not glaucous. Inflorescences 10–30 (–80) -flowered, diffuse cymes; branches spreading. Pedicels 15–55 mm, glabrous or stipitate-glandular. Flowers: sepals 1–3-veined, ovate to lanceolate or elliptic, 3–4.3 mm, to 5.5 mm in fruit, margins narrow to broad, apex acute to acuminate, glabrous to sparsely stipitate-glandular; petals white or yellowish, oblanceolate to spatulate, 6–9 mm, 1–1.5 times as long as sepals, apex entire or erose; nectaries as lateral and abaxial rounding of base of filaments opposite sepals, 0.3–0.4 mm. Capsules 6–7 mm, glabrous. Seeds reddish-brown to blackish, suborbicular to pyriform or ovoid, 1.3–3.2 mm, tuberculate; tubercles low, rounded to conic.


Phenology: Flowering spring–summer.
Habitat: Pine and oak woodlands, granitic alluvium on foothills and mountain slopes
Elevation: 1400-2900 m

Distribution

V5 134-distribution-map.gif

Ariz., Calif., Nev., Utah.

Discussion

We now believe that Eremogone macradenia (in the sense of R. L. Hartman 1993) should be split into two species, with E. macradenia var. ferrisiae (Abrams) R. L. Hartman & Rabeler being elevated to species rank (Hartman and R. K. Rabeler 2004), as here. This became particularly obvious when comparing nectary morphology of E. macradenia (rectangular, two-lobed or truncate, 0.7–1.5 mm or narrowly longitudinally rectangular, truncate, densely minutely pubescent with erect to spreading hairs, 0.7–0.8 mm) with that of E. ferrisiae (rounded, 0.3–0.4 mm). Furthermore, the nectary types correlate well with sepal size and inflorescence type, as indicated in the key. This disposition agrees with the conclusions of M. F. Baad (1969).

Selected References

None.

Lower Taxa

None.

"-1.5timesaslongassepals" is not declared as a valid unit of measurement for this property.

... more about "Eremogone ferrisiae"
erose +  and entire +
spinose +  and apiculate +
glabrous +  and sparsely stipitate-glandular +
Ronald L. Hartman +, Richard K. Rabeler +  and Frederick H. Utech +
(Abrams) 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 +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
Arenaria macradenia subsp. ferrisiae +
filiform +  and subulate or narrowly linear +
? (?) +  and ? (?) +
reduced +
ovoid;urceolate +
0.6 cm6 mm <br />0.006 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Ferris’s sandwort +
dish--shaped +
expanded +
Ariz. +, Calif. +, Nev. +  and Utah. +
1400-2900 m +
straight +  and curved +
central +  and peripheral +
inconspicuous +
unisexual +  and bisexual +
stalked +  and simple +
Pine and oak woodlands, granitic alluvium on foothills and mountain slopes +
disc--shaped +  and dish +
10-30(-80)-flowered +
connate +
narrow +  and broad +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
swollen +
3 +  and 5 +
crassinucellate +  and bitegmic +
campylotropous +
stipitate-glandular +  and glabrous +
1.5 cm15 mm <br />0.015 m <br /> (5.5 cm55 mm <br />0.055 m <br />) +
fugacious +
0.6 cm6 mm <br />0.006 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
Flowering spring–summer. +
tuberculate +
suborbicular +  and pyriform or ovoid +
persistent +
connate +  and distinct +
ovate;lanceolate or elliptic +
0 cm0 mm <br />0 m <br /> (0.55 cm5.5 mm <br />0.0055 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 />) +
Eremogone macradenia var. ferrisiae +
Stout (?) +  and Slender (?) +
Eremogone ferrisiae +
Eremogone +
species +
ascending;recurved +
divided +
rounded +  and conic +
10 +  and 8 +
rhizomatous +  and taprooted +