Comprehensive Description
provided by North American Flora
Gymnosporangium floriforme Thaxter ; Kern, Bull. Torrey
Club 35: 503, 1908.
Roestelia Jlaviformis Atk.; Underw. & Earle, Bull. Ala. Exp. Sta. 80 : 218, hyponj^n. 1897. Gymnosporangium flaviforme Earle, Contr. U. S. Nat. Herb. 6: 186, hyponym. 1901. Aecidium Jiaviforme Farl. Bibl. Index 1 : 44, hyponyra. 1905.
Pycnia epiphyllous, numerous, gregarious, more or less crowded in irregular groups 1-5 mm. across, on thickened discolored spots 5-10 mm. or more across, prominent, conspicuous, punctiform. honey-yellow becoming blackish, globoid or somewhat flask-shaped, 150-175 ju in diameter, 130-160 /i high; ostiolar filaments up to 50 ^ long.
- bibliographic citation
- Joseph Charles Arthur, Frank Dunn Kern. 1912. (UREDINALES); AECIDIACEAE (continuatio), GYMNOSPORANGIUM. North American flora. vol 7(3). New York Botanical Garden, New York, NY
