Boechera fendleri

(S. Watson) W. A. Weber

Phytologia 51: 370. 1982.

Basionym: Arabis holboellii var. fendleri S. Watson in A. Gray et al., Syn. Fl. N. Amer. 1(1,1): 164. 1895
Synonyms: Arabis fendleri (S. Watson) Greene
Treatment appears in FNA Volume 7. Treatment on page 378. Mentioned on page 350, 359, 371, 381, 382, 393, 396, 408, 410.

Perennials; short to long-lived; sexual; caudex usually not woody (sometimes with persistent, crowded leaf-bases). Stems 1–7 per caudex branch, arising from center of rosette near ground surface, or arising laterally proximal to sterile shoots, 1.5–5.5 (–8) dm, densely pubescent proximally, trichomes simple and long-stalked, 2-rayed, 0.2–0.9 mm, glabrous distally. Basal leaves: blade broadly oblanceolate, 5–15 (–20) mm wide, margins dentate, ciliate, trichomes (simple), to 1.2 mm, surfaces glabrous or pubescent, trichomes simple and long-stalked, usually 2-rayed, rarely some 3-rayed, 0.2–0.6 mm. Cauline leaves: 8–25, often concealing stem proximally; blade auricles 0.8–3 mm, surfaces of distalmost leaves often glabrous. Racemes 6–40 (–74) -flowered, usually unbranched. Fruiting pedicels horizontal to divaricate-ascending, curved or angled downward, 9–18 (–23) mm, usually glabrous, rarely sparsely pubescent, trichomes spreading, simple. Flowers ascending at anthesis; sepals sparsely hirsute; petals usually lavender, rarely white, 5–9 × 1–2 mm; pollen ellipsoid. Fruits widely pendent, not appressed to rachis, not secund, curved to nearly straight, edges parallel, 3–5.8 cm × 1.5–2 mm; valves glabrous; ovules 98–128 per ovary; style 0.2–0.5 mm. Seeds biseriate, 0.9–1.2 × 0.6–0.8 mm; wing distal (sometimes absent), 0.05–0.15 mm wide. 2n = 14.


Phenology: Flowering Apr–Jul.
Habitat: Rocky slopes in pine forests, pinyon-juniper woodlands, scrub oak
Elevation: 1800-2800 m

Distribution

V7 523-distribution-map.gif

Ariz., Colo., Nev., N.Mex., Utah.

Discussion

As circumscribed by R. C. Rollins (1993), Boechera fendleri included distinctive elements, segregated here as B. porphyrea, B. spatifolia, and B. texana (see M. D. Windham and I. A. Al-Shehbaz 2006, 2007 for detailed comparison). Boechera fendleri in the strict sense is a sexual diploid extending from the Four Corners region through northern Arizona to southern Nevada.

Selected References

None.

Lower Taxa

None.

"elongated" is not a number."thick" is not a number."dm" is not declared as a valid unit of measurement for this property.

... more about "Boechera fendleri"
oblong +  and ovate +
Ihsan A. Al-Shehbaz +  and Michael D. Windham +
(S. Watson) W. A. Weber +
not +  and rosulate +
Arabis holboellii var. fendleri +
appendaged +  and unappendaged +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
lyrate-pinnatifid +, dentate +  and entire +
dissected +, repand +, sinuate +, crenate +  and dentate +
oblanceolate +
much smaller +  and reduced +
5mm;15mm +
urceolate +, campanulate +  and tubular +
branched +  and simple +
petiolate +  and sessile +
well-developed +
indistinct +
not +  and differentiated +
emarginate +  and entire +
Ariz. +, Colo. +, Nev. +, N.Mex. +  and Utah. +
3 cm30 mm <br />0.03 m <br /> (5.8 cm58 mm <br />0.058 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
1800-2800 m +
straight +  and curved +
not winged +  and unappendaged +
connate +  and distinct +
actinomorphic +
curved +  and nearly straight +
torulose +, falcate +, lanceolate +, oblong +  and linear +
Rocky slopes in pine forests, pinyon-juniper woodlands, scrub oak +
annular +  and semiannular +
sessile +  and petiolate +
alternate +, not +  and rosulate +
cauline +  and basal +
connate +  and distinct +
decurrent +
pinnatifid +
prominent +  and obscure +
tenuinucellate +, crassinucellate +  and bitegmic +
campylotropous +  and anatropous +
0.5 cm5 mm <br />0.005 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
rudimentary +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Flowering Apr–Jul. +
trinucleate +  and 3(-11)-colpate +
ellipsoid +
unbranched;6-40(-74)-flowered +
elongated +
reflexed +, ascending +  and erect +
slender +
mucilaginous +
margined +, not winged +  and winged +
not +  and mucilaginous +
White (?) +, Black (?) +, Brown (?) +  and Yellow (?) +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
orbicular +, oblong +  and flattened +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
persistent +  and caducous +
distinct +
spreading +, ascending +  and erect +
oblong +  and ovate +
reduced +
latiseptate +, schizocarpic +, samaroid +  and lomentaceous +
indehiscent +  and dehiscent +
angustiseptate +, flat +, angled +, terete +, torulose +, not +, segmented +  and nutletlike +
tetradynamous +
branched +  and unbranched +
procumbent +  and decumbent +
1 +  and 7 +
subsessile +, sessile +  and petiolate +
persistent +
distinct +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
glabrous +  and pubescent +
Arabis fendleri +
Boechera fendleri +
Boechera +
species +
simple +  and long-stalked +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
coiled +, 1-7-veined +  and veined +
anastomosing +
1.8 cm18 mm <br />0.018 m <br /> (2.3 cm23 mm <br />0.023 m <br />) +
perennial +  and long-lived +
downward +, horizontal +  and divaricate-ascending +
pubescent +  and glabrous +
0.9 cm9 mm <br />0.009 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
rhizomatous +, taprooted +, scapose +  and not +
perennial +, biennial +  and annual +
subshrub +  and herb +
aquatics +  and terrestrial +
glabrous +  and pubescent +
0.05mm;0.15mm +