font settings and languages

Font Size: Large | Normal | Small
Font Face: Verdana | Geneva | Georgia
Languages:

Perityle inyoensis

(Inyo Rock Daisy)

Overview

[ Back to top ]

Threatened

Threat status

Interesting Facts

[ Back to top ]
 

Common Names

[ Back to top ]

Common Names in English:

Inyo Rock Daisy, Inyo Rockdaisy

Description

[ Back to top ]

Family Compositae

The largest family of flowering plants , the Compositae (Asteraceae), comprising about 1,100 genera and more than 20,000 species and characterized by many small flowers arranged in a head looking like a single flower and subtended by an involucre of bracts. A head may consist of both ray flowers and disk flowers, as in the sunflower, of disk flowers only, as in the burdock, or of ray flowers only, as in the dandelion.

Genus Perityle

Annuals , perennials , subshrubs , or shrubs , 2-45(-75) cm (glabrous or hairy , often gland-dotted). Stems erect to pendent. Leaves mostly cauline; often proximally opposite, distally alternate; petiolate or sessile; blades usually 3-lobed, ultimate margins entire, toothed , or lobed . Heads radiate or discoid , borne singly or in corymbiform arrays. Involucres campanulate , cylindric , funnelform , or hemispheric , 3-15 mm diam. Phyllaries persistent , 5-28 in (1-) 2(-3) series (distinct , linear to ovate , equal or subequal , flat or keeled , glabrous or hairy, apices obtuse , acute, or attenuate). Receptacles flat or convex , pitted , epaleate. Ray florets 0, or (1-) 3-18, pistillate , fertile ; corollas cream, yellow, or white (showy or rudimentary ). Disc florets 5-200, bisexual , fertile; corollas cream, yellow, or white, tubes shorter than or nearly equal to cylindric, funnelform, or campanulate throats, lobes 4, ± deltate (acute; stamens 4; style branches flattened, linear, usually tapering to fine, minutely hairy tips). Cypselae (black) flattened to subcylindric , linear to oblanceolate or obovate (margins ± calloused and glabrous, hairy, or ciliate , faces usually hairy, sometimes glabrous) ; pappi 0, or persistent or falling, of 1-35 bristles plus callous crowns or hyaline scales . x = 17, 19.

Species 66: United States, Mexico, South America.

Most species of Perityle are rock-dwelling subshrubs exhibiting geographic speciation ; most are found in the eroded mountain and basin region of the southwestern United States.[1]

Physical Description

Species Perityle inyoensis

Perennials or subshrubs , 12-25 cm; pilose-villous indument intermixed with short glandular hairs . Leaves (opposite or alternate) : petioles 5-20(-50) mm; blades orbiculate, ovate , or ovate-deltate, 8-18(-21) × 6-12(-15) mm, margins serrate to serrate-lobed. Heads borne singly or (2-3) in corymbiform arrays, 7-8.5(-9) × 5-7(-8) mm. Peduncles 8-40 mm. Involucres campanulate . Phyllaries 14-21, linear-lanceolate to sub-lanceolate, 5.5-6.5 × 1.1-1.5 mm. Ray florets 0. Disc florets 35-60; corollas yellow, tubes 1.4-1.6 mm, throats subtubular to subfunnelform, 2-2.4 mm, lobes 0.6-0.7 mm. Cypselae narrowly oblanceolate to suboblanceolate, (2.5-) 3-3.5 mm, margins thin-calloused, short-hairy; pappi usually inconspicuous, callous crowns, rarely of minute scales . 2n = 36. [source]

Perityle inyoensis is allied to P. megalocephala, which occurs at intermediate and lower elevations to the north and east of P. inyoensis. [source]

Flowers: Bloom Period: February, March, April, May, June, July, August, September, October.

Habitat

Dry, rocky slopes ; of conservation concern; 1800-2800 m [2].

Taxonomy

[ Back to top ]

Synonyms

Contr. Dudley Herb. 5: 104 • Laphamia intricata Brandeg. • Laphamia inyoensis Ferris • Laphamia megalocephala intricata (Brandeg.) Keck • Perityle megalocephala var. intricata (Brandeg.) A. Powell

Notes

Name Status: Accepted Name .

Comment: Data Providers: IPNI, Tropicos. GCC LSID: urn :lsid:compositae.org:names:167F0337-932F-43F7-87D6-1CB4DB4FC88C

Last scrutiny: 04-Sep-09

Similar Species

[ Back to top ]

Members of the genus Perityle

ZipcodeZoo has pages for 55 species, subspecies, varieties, forms, and cultivars in this genus:

P. aglossa (Bluff Rock Daisy) · P. ajoensis (Ajo Rock-Daisy) · P. ambrosiifolia (Lace-Leaf Rock Daisy) · P. angustifolia (Narrow-Leaved Rockdaisy) · P. bisetosa (Two-Spike Rock Daisy) · P. bisetosa var. appressa (Twobristle Rockdaisy) · P. bisetosa var. bisetosa (Twobristle Rockdaisy) · P. bisetosa var. scalaris (Twobristle Rockdaisy) · P. californica (California Rock Daisy) · P. cernua (Nodding Rock Daisy) · P. ciliata (Ciliate Rockdaisy) · P. cinerea (Gray Rock Daisy) · P. cochisensis (Cochise Rock Daisy) · P. congesta (Compact Rock Daisy) · P. coronopifolia (Arizona Rockdaisy) · P. dissecta (Dissected Rockdaisy) · P. emoryi (Emory Rockdaisy) · P. fosteri (Foster's Rock-Daisy) · P. gilensis (Fish Creek Rockdaisy) · P. gilensis var. gilensis (Fish Creek Rockdaisy) · P. gilensis var. salensis (Salt River Rockdaisy) · P. gracilis (Grass Leaf Rock Daisy) · P. huecoensis (Hueco Mountains Rockdaisy) · P. incana (Perityle) · P. intricata (Delicate Rock-Daisy) · P. inyoensis (Inyo Rock Daisy) · P. lemmonii (Lemmon's Rock-Daisy) · P. lindheimeri (Bluffdaisy) · P. lindheimeri var. halimifolia (Lindheimers Rockdaisy) · P. lindheimeri var. lindheimeri (Lindheimer's Rockdaisy) · P. megalocephala (Bighead Rockdaisy) · P. megalocephala var. megalocephala (Limestone Rockdaisy) · P. megalocephala var. oligophylla (Small-Leaved Rockdaisy) · P. microglossa (Mazanilla Bronca) · P. microglossa var. microglossa (Shortray Rockdaisy) · P. microglossa var. saxosa (Shortray Rockdaisy) · P. parryi (Heartleaf Rockdaisy) · P. quinqueflora (Five Flower Rock Daisy) · P. rupestris (Leafy Rockdaisy) · P. rupestris var. albiflora (Leafy Rockdaisy) · P. rupestris var. rupestris (Leafy Rockdaisy) · P. saxicola (Fish Creek Rock Daisy) · P. specuicola (Alcove Rockdaisy) · P. stansburii (Standbury's Rockdaisy) · P. stansburyi (Stansbur's Rockdaisy) · P. staurophylla (New Mexico Rockdaisy) · P. staurophylla (Barneby) Shinners var. homoflora T.K. Todsen (New Mexico Rockdaisy) · P. staurophylla var. homoflora (New Mexico Rockdaisy) · P. staurophylla var. staurophylla (New Mexico Rockdaisy) · P. tenella (Springdale Rockdaisy) · P. turneri (Turner's Rockdaisy) · P. vaseyi (Margined Rockdaisy) · P. villosa (Hanaupah Laphamia) · P. vitreomontana (Glass Mountain Rockdaisy) · P. warnockii (River Rock-Daisy)

More Info

[ Back to top ]

Further Reading

[ Back to top ]

Notes

[ Back to top ]

Contributors

Data Sources

Accessed through GBIF Data Portal February 01, 2008:

Identifiers

Footnotes

  1. Sharon C. Yarborough, A. Michael Powell "Perityle". in Flora of North America Vol. 21 Page 317, 333, 334. Oxford University Press. Online at EFloras.org. [back]
  2. "Perityle inyoensis". in Flora of North America Vol. 21 Page 324, 326, 328. Oxford University Press. Online at EFloras.org. [back]
Last Revised: 7/15/2012