header
Home
About NMRPTC
Contacts
Rare Plant List
County List
Agency Status
Photo List
About the List
History of Changes
Species Considered, but dropped
Photographers, Illustrators and Authors
Image Usage Guidelines
Sponsors
Discussion Group
Useful Literature
Links

Erigeron rybius
(Sacramento Mountains fleabane)

[taxon report][distribution map][all photos][line drawing]



Family: Asteraceae

Scientific Name: Erigeron rybius Nesom

Synonyms: None

Vernacular Name: Sacramento Mountains fleabane

R-E-D Code: 1-1-3

Description: Perennial herb arising from slender woody rhizomes; stems erect, to 3.5 dm tall; basal leaves obovate to oblanceolate 1.8-13.5 cm long, 6-27 mm wide, serrate with small shallow teeth, tapering at the base to a winged petiole; stem leaves similar, becoming gradually smaller and sessile above; flower heads 1-6 per stem on stalks 1-3 cm long; involucral bracts narrowly lanceolate, in three equal series, sparsely to densely pubescent; ray flowers 45-100 per head, white (occasionally drying lilac), 11-20 mm long; achenes oblong, laterally compressed but plump, sparsely appressed-hairy; pappus of 20-30 slender bristles. Flowers July to September.

Similar Species: Other leafy-stemmed Erigeron species in the Sacramento Mountains do not have slender rhizomes.


Distribution: New Mexico, northern Otero and southern Lincoln counties, Sacramento and White mountains.

Habitat: Meadows and forest openings in lower and upper montane coniferous forests; 2,100-2,800 m (7,000-9,200 ft).

Remarks: This narrow endemic was only recently distinguished from Erigeron rusbyi, which has a thickened taproot and occurs in southwestern New Mexico and adjacent Arizona.

Conservation Considerations: Often occurs in forest openings created by roads. It is locally abundant and not significantly threatened by the land uses within its habitats.

Important Literature (*Illustration):

*Nesom, G.L. 1982. Systematics of the Erigeron rusbyi group (Asteraceae) and delimitation of sect. Peregrinus. Systematic Botany 7(4):457-470.

*New Mexico Native Plants Protection Advisory Committee. 1984. A handbook of rare and endemic plants of New Mexico. University of New Mexico Press, Albuquerque.

Information Compiled By: Robert Sivinski, 1999

Agency Status:
Taxon USFWS State of NM USFS BLM Navajo Nation Natural Heritage NM Global Rank
Erigeron rybiusSoCSoC...S3G3


Photo credits in header Peniocereus greggii var. greggii © T. Todsen,
Lepidospartum burgessii © M. Howard, Argemone pleiacantha ssp. pinnatisecta © R. Sivinski
©2005 New Mexico Rare Plant Technical Council