Part 8, 1922] AECIDIACEAE 579 
130. Micropuccinia Marianae (Sydow) Arthur & Jackson. 
Puccinia Marianae Sydow, Hedwigia Beibl. 40: 127. 1901. 
O. Pycnia unknown, probably not formed. 
III. Telia amphigenous, gregarious and often confluent in orbicular groups 2-10 mm. 
across, small, round, 0.2-0.5 mm. in diameter, early naked, compact, pulvinate, blackish- 
brown, ruptured epidermis inconspicuous; teliospores variable, cylindric, fusiform, ellipsoid, 
or clavate, 18-28 by 40-64 u, rounded or more commonly tapering and obtuse above, rounded 
or narrowed below; slightly or not constricted at septum; wall dark cinnamon- or chestnut- 
brown, thick, 2-3.5 yu, slightly thicker above, 4-8 », smooth; pedicel colorless, twice length 
of spore; mesospores frequently intermixed. 
On CaRDUACEAE: 
Sideranthus megacephalus (Nash) Small, Florida. 
TYPE Locality: Sanibel Island, Florida, on “‘Chrysopsis Mariana,’ now determined as Side- 
ranthus megacephalus. 
DISTRIBUTION: Southern Florida. 
131. Micropuccinia Notopterae (Arth.) Arthur & Jackson. 
Puccinia Notopterae Arth. Bull. Torrey Club 45: 149. 1918. 
O. Pyenia amphigenous, crowded on brownish areas 2-3 mm. across, conspicuous, dark- 
brown, globoid, 85-150 by 90-130 yu; ostiolar filaments up to 80 u long. 
Il. Telia epiphyllous, becoming amphigenous, arranged in a concentric manner about 
the pyenia or on the veins becoming confluent, circular or oblong, 0.3-1 mm. across, early 
naked, pulverulent, dark cinnamon- to light chestnut-brown, ruptured epidermis noticeable; 
teliospores ellipsoid, 19-24 by 26-34, rounded above and below, slightly constricted at 
septum; wall cinnamon-brown, about 1.5 » thick, uniform, coarsely and rather sparingly 
verrucose; pedicel colorless, fragile. 
On CARDUACEAE: 
Notoptera hirsuta (Sw.) Urban, Jamaica. 
TYPE Locality: Mandeville, Jamaica, on Notoptera hirsuta. 
DistRisvuTIoNn: Known only from the type locality. 
132. Micropuccinia ferox (Dietel & Holway) Arthur & Jackson. 
Puccinig ferox Dietel & Holway; Holway, Bot. Gaz. 31: 333. 1901. 
O. Pycnia unknown, probably not formed. 
III. Telia amphigenous and caulicolous, closely crowded over large areas, causing con- 
siderable distortion, round, small, 0.2-0.5 mm. across, early naked, very pulverulent, cinna- 
mon-brown, ruptured epidermis not conspicuous; teliospores ellipsoid, 22-26 by 35-48 yp, 
rounded above and below, noticeably constricted at septum; wall light cinnamon-brown, 
uniformly 1-2 » thick, very finely and evenly verrucose-rugose, appearing smooth when wet; 
pedicel colorless, short, deciduous. 
On CARDUACEAE: 
Verbesina diversifolia DC., Oaxaca. : 
Verbesina myriocephala Schultz-Bip., Costa Rica. 
TYPE LOCALITY: Oaxaca, Mexico, on Verbesina diversifolia. 
DIsTRIBUTION: Southern Mexico to Costa Rica. 
Exsiceatit: Barth. Fungi Columb. 4569; Barth. N. Am. Ured. 141. 
133. Micropuccinia absicca (Jackson & Holway) 
Arthur & Jackson. 
Puccinia absicca Jackson & Holway; Arthur, Mycologia 10: 144. 1918. 
O. Pyenia epiphyllous, few, gregarious in compact groups 0.5 mm. across, conspicuous, 
yellowish or light-orange, globoid or depressed-globoid, 30-50 » broad “by 30-40 » high; ostiolar 
filaments short. 
III. Telia epiphyllous or rarely hypophyllous, numerous in crowded orbicular groups 
surrounding the pycnia 1-3 mm. across, or more elongate to 10 mm. along the veins, small, 
roundish, 0.5—-0.8 mm. across, somewhat tardily naked, pulverulent, chestnut-brown, ruptured 
