Senecio amplectens var. holmii

(Greene) H. D. Harrington

Man. Pl. Colorado, 641. 1954.

IllustratedEndemic
Basionyms: Senecio holmii Greene Pittonia 4: 120. 1900
Synonyms: Ligularia holmii (Greene) W. A. Weber S. seridophyllus Greene
Treatment appears in FNA Volume 20. Treatment on page 552.

Plants (5–) 10–20 (–30) cm (herbage glabrous or glabrate at flowering). Stems usually clustered (arching upward). Leaves mostly basal and proximal; mid and distal leaves reduced; herbage glabrous or at least glabrate at maturity. Phyllaries green or light purplish, glabrous.


Phenology: Flowering mid–late summer.
Habitat: Loose, rocky soil at or above timberline
Elevation: 2900–4200 m

Distribution

V20-1217-distribution-map.gif

Colo., Mont., Nev., N.Mex., Utah, Wyo.

Discussion

Plants of var. holmii from the Ruby Mountains, Nevada, have heads that are less prominently nodding and ray corollas with shorter laminae than are usual for plants of the variety from elsewhere; those plants are extremes within the variation for the variety as it is circumscribed here.

Selected References

None.

Lower Taxa

None.

175 +  and 180 +
not tailed +, rounded +  and obtuse +
papillate +
scarious +
usually ovate +  and lance-linear +
racemiform +, paniculiform +, corymbiform +  and cymiform +
indeterminate +  and determinate +
Theodore M. Barkley† +
(Greene) H. D. Harrington +
tapered +
Senecio holmii +
5 cm50 mm <br />0.05 m <br /> (10 cm100 mm <br />0.1 m <br />) +
4 cm40 mm <br />0.04 m <br /> (5 cm50 mm <br />0.05 m <br />) +
10 cm100 mm <br />0.1 m <br /> (20 cm200 mm <br />0.2 m <br />) +
lanceolate;oblanceolate +
2cm;4cm +
winged;nerved;ribbed +
linear;filiform +
barbellulate +  and smooth +
white +  and stramineous +
purplish +, reddish +, white +, ochroleucous +, yellow +  and white rarely reddish +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
angled +, 5-ribbed +, prismatic +  and cylindric +
fertile +  and bisexual +
fertile +  and bisexual +
Colo. +, Mont. +, Nev. +, N.Mex. +, Utah +  and Wyo. +
2900–4200 m +
hairy +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Loose, rocky soil at or above timberline +
discoid +  and radiate +
indeterminate +
heterogamous +  and homogamous +
glabrate +  and glabrous +
each +  and sessile +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
turbinate;campanulate +
proximal +  and basal +
reduced +
erect;recurved +
deltate +
dentate to pinnatifid +  and entire +
dentate +  and denticulate +
2-carpellate +
persistent +
Flowering mid–late summer. +
light purplish +  and green +
mostly oblong +  and lanceolate or linear +
Man. Pl. Colorado, +
bearing subulate enations +, hairy +  and bristly +
flat;convex +
exalbuminous +
Illustrated +  and Endemic +
appendaged +  and truncate +
papillate +
Ligularia holmii +  and S. seridophyllus +
Senecio amplectens var. holmii +
Senecio amplectens +
variety +
campanulate +
brownish +  and black +
denticulate +  and serrate or toothed +
5 cm50 mm <br />0.05 m <br /> (10 cm100 mm <br />0.1 m <br />) +
10 cm100 mm <br />0.1 m <br /> (60 cm600 mm <br />0.6 m <br />) +