Comprehensive Description
(
anglais
)
fourni par North American Flora
Kuehneola duchesneae Arthur, sp. nov
O. pycnia chiefly epiphyllous, in small crowded groups, often confluent, inconspicuous, indefinitely mammilloid, often extending between and obliterating the epidermal cells,
90-130// broad by 50-55 // high.
II. Uredinia at first (primary) amphigenous and surrounding the pycnia» soon (secondary) quite hypophyllous and scattered, round, 0.3-0.8 mm. across, early naked, slightly pulvinate, pulverulent, yellow becoming pale, ruptured epidermis noticeable ; paraphyses with secondary uredinia few, peripheral, not reaching above the spore-mass, cylindrical, nearly or quite erect, 8-12 by 40-50 fi, the wall uniformly thin, 1 // or less, colorless, smooth ; urediniospores broadly ellipsoid or globoid, 14-17 by 16-23^; wall nearly or quite colorless, thin, 1/i or less, minutely and closely echinulate, points 1-1. S fJapart, the pores small, inconspicuous, 3, equatorial.
- citation bibliographique
- Joseph Charles Arthur, Frank Dunn Kern. 1912. (UREDINALES); AECIDIACEAE (continuatio), GYMNOSPORANGIUM. North American flora. vol 7(3). New York Botanical Garden, New York, NY