Perityle lemmonii

(A. Gray) J. F. Macbride

Contr. Gray Herb. 56: 39. 1918.

Common names: Lemmon’s rock daisy
Basionym: Laphamia lemmonii A. Gray Proc. Amer. Acad. Arts 16: 101. 1880 (as lemmoni)
Synonyms: Laphamia dissecta subsp. lemmonii (A. Gray) W. E. Niles
Treatment appears in FNA Volume 21. Treatment on page 331. Mentioned on page 324, 332, 334.

Perennials or subshrubs, 6–17 (–23) cm (densely clumped, stems leafy); usually densely pilose to villous, sometimes glabrate. Leaves (opposite or alternate): petioles 3–8 (–10) mm (usually shorter than blades); blades ovate to ovate-deltate (margins crenate, lacerate, laciniate, or serrate), or 3–5-lobed or pinnately divided (lobes crenate, lacerate, laciniate, lobed, or serrate), 6–18 × 7–20 mm. Heads borne singly or (2–3) in corymbiform arrays (often obscured by leaves), 7–10 × 5–9 mm. Peduncles 1–5 (–10) mm. Involucres campanulate. Phyllaries 10–16, linear-lanceolate, lanceolate, to oblanceolate, 4–6.4 (–8) × 1–1.7 mm (apices acute). Ray-florets 0. Disc-florets 20–40; corollas yellow, often tinged with purple, tubes 1–1.9 mm, throats broadly tubular to subfunnelform, 2–2.5 (–2.9) mm, lobes 0.4–0.6 mm. Cypselae narrowly oblong to narrowly oblanceolate, 2.5–3.2 (–3.6) mm, margins thin-calloused, short-hairy; pappi usually of 1 (–2) delicate bristles 1–3 (–4) mm, rarely plus vestigial, hyaline scales, sometimes 0.2n = 34.


Phenology: Flowering spring–fall.
Habitat: Crevices of granitic boulders and cliffs
Elevation: 600–2300 m

Distribution

V21-825-distribution-map.gif

Ariz., N.Mex., Mexico (Chihuahua)

Discussion

Perityle lemmonii, which occurs in the mountain areas of southeastern Arizona and southwestern New Mexico, has variable leaf morphology that is often consistent within geographic populations. Its former inclusion within P. dissecta is discussed under that species.

Selected References

None.

Lower Taxa

None.
... more about "Perityle lemmonii"
not tailed +, rounded +  and obtuse +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
indeterminate +  and determinate +
Sharon C. Yarborough +  and A. Michael Powell +
(A. Gray) J. F. Macbride +
decurrent +
Laphamia lemmonii +
compound +  and simple +
0.6 cm6 mm <br />0.006 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
ovate;ovate-deltate or 3-5-lobed or pinnately divided +
7mm;20mm +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
subplumose +, barbellulate +  and smooth +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
subequal +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Lemmon’s rock daisy +
tinged with purple +  and yellow +
0.32 cm3.2 mm <br />0.0032 m <br /> (0.36 cm3.6 mm <br />0.0036 m <br />) +
narrowly oblong +  and narrowly oblanceolate +
fertile +  and bisexual +
fertile +  and bisexual +
Ariz. +, N.Mex. +  and Mexico (Chihuahua) +
600–2300 m +
hairy +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Crevices of granitic boulders and cliffs +
discoid +  and radiate +
indeterminate +
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
homogamous +  and heterogamous +
0.5 cm5 mm <br />0.005 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
each +  and sessile +
0.3 cm3 mm <br />0.003 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
campanulate +
0.35 cm3.5 mm <br />0.0035 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
sessile +  and petiolate +
alternate +  and opposite +
deltate +
dentate to pinnatifid or palmatifid +  and entire +
short-hairy +
2-carpellate +
persistent +
of 1-2(-6) equal or subequal , smooth , antrorsely barbellulate or subplumose , bristles +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Flowering spring–fall. +
0.64 cm6.4 mm <br />0.0064 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.64 cm6.4 mm <br />0.0064 m <br />) +
10 +  and 16 +
0.1 cm1 mm <br />0.001 m <br /> (0.17 cm1.7 mm <br />0.0017 m <br />) +
Contr. Gray Herb. +
bearing subulate enations +, hairy +  and bristly +
convex;flat +
exalbuminous +
erect +  and pendent +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Laphamia dissecta subsp. lemmonii +
Perityle lemmonii +
Perityle sect. Laphamia +
species +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.29 cm2.9 mm <br />0.0029 m <br />) +
broadly tubular +  and subfunnelform +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.19 cm1.9 mm <br />0.0019 m <br />) +
lobed +, toothed +  and entire +
17 cm170 mm <br />0.17 m <br /> (23 cm230 mm <br />0.23 m <br />) +
glabrate +, usually densely pilose +  and villous +
6 cm60 mm <br />0.06 m <br /> (17 cm170 mm <br />0.17 m <br />) +
usually densely pilose +  and villous +