Perityle cernua

(Greene) Shinners

SouthW. Naturalist 4: 204. 1959.

Common names: Organ Mountain rock daisy
IllustratedEndemicConservation concern
Basionym: Laphamia cernua Greene Bull. Torrey Bot. Club 25: 122, plate 333, figs. 3, 4. 1898
Treatment appears in FNA Volume 21. Treatment on page 318. Mentioned on page 319.

Plants 3–12(–20) cm (closely appressed to rocks); glabrate or with transparent, multicellular hairs on petioles, peduncles, and phyllaries. Leaves: petioles 7–25 mm; blades ovate-reniform to ovate-cordate, 10–40 × 8–40 mm, margins unevenly serrate-dentate. Heads borne singly (nodding or erect), 10–12 × 12–14 mm. Peduncles 10–19 mm. Involucres broadly campanulate. Phyllaries 18–28, linear-lanceolate, 6–9 × 1.2–2 mm. Disc florets 20–150; corollas yellow, tubes 1.2–2 mm, throats narrowly funnelform, 2–3.3 mm, lobes 0.7–0.8 mm. Cypselae 2.1–3 mm; pappi of 25–35 bristles 0.5–1.5(–2) mm. 2n = 34 + 1 frag.


Phenology: Flowering spring–fall.
Habitat: Limestone or igneous cliffs and slopes
Elevation: 1600–3000 m

Discussion

Of conservation concern.

Perityle cernua is known only from the Organ Mountains of Doña Ana County.

Selected References

None.

Lower Taxa

None.
... more about "Perityle cernua"
Sharon C. Yarborough +  and A. Michael Powell +
(Greene) Shinners +
Laphamia cernua +
Organ Mountain rock daisy +
1600–3000 m +
Limestone or igneous cliffs and slopes +
Flowering spring–fall. +
SouthW. Naturalist +
Illustrated +, Endemic +  and Conservation concern +
Undefined sect. Pappothrix +
Perityle cernua +
Perityle sect. Pappothrix +
species +