Flora of North America species comparison

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Perityle microglossa

Perityle ajoensis

short-Ray Rock daisy

Ajo Rock daisy
Habit Perennials or subshrubs, to 30 cm; usually densely short-tomentose.
Leaves

(proximally opposite, distally alternate): petioles 3–10 mm;

blades deltate, ovate, or suborbiculate, 5–15 × 5–15 mm, margins shallow-crenate to dentate.
Peduncles

5–15 mm.
Involucres

campanulate to hemispheric.
Ray florets

0.
Disc florets

20–45;

corollas yellow, tubes 1–1.2 mm, throats tubular to narrowly funnelform, 1.3–1.6 mm, lobes 0.4–0.6 mm.
Phyllaries

15–20, oblanceolate to broadly lanceolate, 4–5 × 0.8–1.8 mm.
Heads

borne singly or (2–10) in loose, corymbiform arrays, 7–9 × 6–9 mm.
Cypselae

narrowly suboblong to oblanceolate, 2.5–3.5 mm, margins prominently calloused, short-hairy;

pappi of 1(–2) stout bristles 1.8–2.8 mm.
2n

= 34.

Perityle microglossa

Perityle ajoensis
Phenology Flowering spring–fall.
Habitat Crevices of rocky canyon walls and cliff faces
Elevation 800–1200 m (2600–3900 ft)
Distribution
from FNA
AZ; TX; Mexico
[WildflowerSearch map]
[BONAP county map]
from FNA
AZ
[BONAP county map]
Discussion

Varieties 2 (1 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Of conservation concern.

Perityle ajoensis occurs in the Ajo Mountains of Organ Pipe Cactus National Monument in Pima County.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 21, p. 321. FNA vol. 21, p. 331.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Peritylinae > Perityle > sect. Perityle Asteraceae > tribe Heliantheae > subtribe Peritylinae > Perityle > sect. Laphamia
Sibling taxa
P. aglossa, P. ajoensis, P. ambrosiifolia, P. angustifolia, P. bisetosa, P. cernua, P. ciliata, P. cinerea, P. cochisensis, P. congesta, P. coronopifolia, P. dissecta, P. emoryi, P. fosteri, P. gilensis, P. gracilis, P. huecoensis, P. intricata, P. inyoensis, P. lemmonii, P. lindheimeri, P. megalocephala, P. parryi, P. quinqueflora, P. rupestris, P. saxicola, P. specuicola, P. stansburyi, P. staurophylla, P. tenella, P. vaseyi, P. villosa, P. vitreomontana, P. warnockii
P. aglossa, P. ambrosiifolia, P. angustifolia, P. bisetosa, P. cernua, P. ciliata, P. cinerea, P. cochisensis, P. congesta, P. coronopifolia, P. dissecta, P. emoryi, P. fosteri, P. gilensis, P. gracilis, P. huecoensis, P. intricata, P. inyoensis, P. lemmonii, P. lindheimeri, P. megalocephala, P. microglossa, P. parryi, P. quinqueflora, P. rupestris, P. saxicola, P. specuicola, P. stansburyi, P. staurophylla, P. tenella, P. vaseyi, P. villosa, P. vitreomontana, P. warnockii
Subordinate taxa
P. microglossa var. microglossa
Name authority Bentham: Bot. Voy. Sulphur, 119. (1844) Todsen: J. Arizona Acad. Sci. 9: 35. (1974)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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