Erigeron pumilus var. gracilior Cronquist

NEW YORK BOTANICAL GARDEN

02094299

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At least five species of Erigeron were found together at
this locality as follows« E. blooaeri (two collections 974 I
975, the former unusual for the great number of bracts on the
peduncles and subtending the phyllaries; both diploid, 2n=9 II),
E. chrysopsidis (976, rays yellow, no chromosome count), E.
elegantulus (979, blue-rayed triploid, 2n=27), E. linearis (980,
yellow-rayed pentaploid, 2n=ca. 45), and E. pumilis (982, tetra-
ploid, 2n=18 II).

In addition, two putative hybrids resulting from crosses
involving E. elegantulus and E. linearis were collected: 977
with white rays (unfortunately, no chromosome count) and 978
with cream rays (tetraploid, 2n=36).

Herbarium of the University of California

Evigevon pumi,Zus Nutt. ssp. ïntexmedïus
Cronq. var. gvacilior Cronq.
det. A. Cronquist, 1970.

Chromosome count: 2n = 18 II.

Rays blue.

Oregon. Baker Co., ca. 18 miles by road SE
of Baker (ca. 5 miles NW of Durkee) at road
cut on Interstate Rte 80N. ca. 3200'.

John L. Strother 982
William J. Perlatte

21 June 1970

02094299