Perityle cochisensis

(W. E. Niles) A. M. Powell

Sida 5: 123. 1973.

Common names: Cochise rock daisy
EndemicConservation concern
Basionym: Laphamia cochisensis W. E. Niles Mem. New York Bot. Gard. 21(1): 47, fig. 28. 1970
Treatment appears in FNA Volume 21. Treatment on page 334. Mentioned on page 325.

Perennials or subshrubs, 4–12 (–15+) cm (usually erect, compact, sometimes spreading, moderately to densely leafy); usually glabrate, sometimes sparsely or densely short-hairy, rarely sparsely villous. Leaves: petioles 5–30 mm (usually equal to or longer than blades); blades deltate-orbiculate, ovate, or subdeltate, 5–27 × 6–27 mm, irregularly lobed, lobes 3–5, ultimate margins serrate or lobed. Heads usually borne singly, 8–10 × ca. 10 mm. Peduncles 5–10 mm. Involucres broadly campanulate to hemispheric. Phyllaries 12–22, lanceolate to ovate, 4.5–6.5 × 1–2.5 mm. Ray-florets 0. Disc-florets 30–45 (–60); corollas yellow, tubes 0.8–1 mm, throats funnelform to narrowly campanulate, 1.8–2 mm, lobes 0.6–0.8 mm. Cypselae oblong to narrowly oblanceolate, 2.5–3 mm, margins thin-calloused, sparsely short-ciliate; pappi usually of 1 (–2) unequal, distally subplumose bristles 2–2.5 mm, sometimes 0.2n = 34.


Phenology: Flowering spring–fall.
Habitat: Granite rock crevices in canyons
Elevation: 1500–2100 m

Discussion

Of conservation concern.

Perityle cochisensis is known only from the Chiricahua Mountains of southeastern Arizona. Some collections of P. lemmonii from the Big Hatchet Mountains of Hidalgo County in southwestern New Mexico may have petioles approaching the length of the blades as in P. cochisensis. The densely pilose or villous induments of those New Mexican plants is similar to that of P. lemmonii.

Selected References

None.

Lower Taxa

None.
... more about "Perityle cochisensis"
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 +
(W. E. Niles) A. M. Powell +
decurrent +
Laphamia cochisensis +
compound +  and simple +
0.5 cm5 mm <br />0.005 m <br /> (2.7 cm27 mm <br />0.027 m <br />) +
lobed;subdeltate;ovate;subdeltate;ovate;deltate-orbiculate +
0.6 cm6 mm <br />0.006 m <br /> (2.7 cm27 mm <br />0.027 m <br />) +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Cochise rock daisy +
oblong +  and narrowly oblanceolate +
fertile +  and bisexual +
fertile +  and bisexual +
1500–2100 m +
hairy +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Granite rock crevices in canyons +
discoid +  and radiate +
indeterminate +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
homogamous +  and heterogamous +
10 cm100 mm <br />0.1 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 />) +
broadly campanulate;hemispheric +
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 +
thin-calloused +
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 />) +
0.5 cm5 mm <br />0.005 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Flowering spring–fall. +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
12 +  and 22 +
0.1 cm1 mm <br />0.001 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
bearing subulate enations +, hairy +  and bristly +
convex;flat +
exalbuminous +
Endemic +  and Conservation concern +
erect +  and pendent +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Undefined (tribe Undefined) subtribe Amauriinae +
Perityle cochisensis +
Perityle sect. Laphamia +
species +
campanulate +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
lobed +  and serrate +
12 cm120 mm <br />0.12 m <br /> (15 cm150 mm <br />0.15 m <br />) +
villous +, short-hairy +  and glabrate +
4 cm40 mm <br />0.04 m <br /> (12 cm120 mm <br />0.12 m <br />) +
12 cm120 mm <br />0.12 m <br /> (15 cm150 mm <br />0.15 m <br />) +