408 NORTH AMERICAN FLORA [VOLUME 7 
II. Uredinia hypophyllous, scattered, round or oval, 0.1-0.6 mm. across, early naked, 
pulverulent, golden-brown, ruptured epidermis rather inconspicuous; urediniospores broadly 
ellipsoid or obovoid, 23-26 by 26-32 »; wall cinnamon-brown, 1.5 « thick, moderately echi- 
nulate, the pores 2, equatorial. 
III. Telia hypophyllous, scattered, round, 0.2-0.4 mm. across, early naked, pulvinate, 
light chestnut-brown becoming cinereous from germination, ruptured epidermis inconspicuous; 
teliospores clavate, ellipsoid-clavate, or oblong, 20-27 by 38-56 4, rounded above, usually 
narrowed below, constricted at septum; wall dark cinnamon-brown above, lighter or colorless 
below, very thin, 1 or less, collapsing somewhat, thickened at apex, 5-104, smooth; 
pedicel colorless, 35-60 » long. 
On LAMIACEAE: 
Cunila leucantha Benth., Guatemala. 
Cunila polyantha Benth., Guatemala. 
TYPE LOCALITY: Quezaltenango, Guatemala, on Cunila leucantha. 
DISTRIBUTION: Guatemala. 
207. Dicaeoma Hyptidis (M. A. Curt.) Arthur. 
Uredo Hyptidis M. A. Curt. Am. Jour. Sci. II. 6: 353. 1848. 
Puccinia Hyptidis Tracy & Earle, Bull. Miss. Exp. Sta. 34: 86. 1895. 
Gymnoconia Hyptidis Lagerh. Tromsé Mus. Aarsh. 17: 83. 1895. 
Argotelium Hyptidis Arth. Résult. Sci. Congr. Bot. Vienne 343. 1906. 
Eriosporangium Hyptidis Arth. N. Am. Flora 7: 211. 1912. 
O. Pycnia amphigenous, few in small groups on discolored spots, inconspicuous, flask- 
shaped, barely protruding above surface of leaf, 110-140 » broad by 160-175 yu high. 
I. Aecia amphigenous, surrounding the pycnia, few in rounded or elongate groups 2-5 mm. 
across, along the nerves on somewhat larger reddish spots, round or oval, bullate, 0.5-1 mm. 
across, somewhat tardily dehiscent by irregular slits, orange-colored fading to dirty-white, 
overarching epidermis reddish and prominent; peridium wanting; aeciospores globoid, 26-32 
by 29-33 u, mostly 28-30 uw in diameter; wall nearly or quite colorless, appearing very thick, 
2.5-3 p, closely and coarsely verrucose. 
II. Uredinia hypophyllous, scattered, round, 0.2-0.5 mm. across, soon naked, dark cinna- 
mon-brown, pulverulent, ruptured epidermis inconspicuous; urediniospores globoid, 22-27 u 
in diameter; wall cinnamon-brown, moderately thin, about 1.5 », finely echinulate, the pores 2, 
opposite in the equator, more or less inconspicuous. 
III. Telia hypophyllous, scattered, round, small, 0.1-0.3 mm. across, early naked, pulvi- 
nate, very pale-brownish, cinereous by germination, ruptured epidermis inconspicuous; 
teliospores fusiform or lance-oblong, 15-19 by 45-704, narrowed or obtuse at both ends, 
constricted at septum; wall nearly or quite colorless, smooth, uniformly thin, about 1 »; 
pedicel nearly or quite colorless, terete, delicate, one half to once length of spore. 
On LAMIACEAE: 7 
Hyptis capitata (L.) Jacq. (Mesosphaerum capitatum Kuntze), Costa Rica; Cuba; Jamaica; 
Porto Rico. 
Hyptis radiata Willd. (Mesosphaerum rugosum Poll.), Florida, Mississippi, South Carolina. 
Hyptis Shaferi Britton, Cuba. 
TYPE LOCALITY: Santee Canal, South Carolina, on Hyptis radiata. 
DistRiBuTION: Along the coast from South Carolina to Mississippi and southward through the 
West Indies. 
208. Dicaeoma medellinense (Mayor) Arthur. 
Aecidium Hyptidis P. Henn. Hedwigia 34: 337. 1895. Not Dicaeoma Hyptidis Arth. 1920. 
Puccinia medellinensis Mayor, Mém. Soc. Neuch. Sci. Nat. 5: 497. 1913. 
O. Pycnia amphigenous, few in small groups on slightly discolored spots, inconspicuous, 
globoid, barely protruding above surface of leaf, 100-175 » broad by 100-150 uw high. 
I. Aecia amphigenous and caulicolous, few in orbicular groups, or more on thickened 
spots when caulicolous, orbicular, small, 0.1-0.3 mm. across, soon open, orange-colored fading 
to dirty-white; peridium very fragile and evanescent, less conspictious than the ruptured epi- 
dermis; peridial cells loosely overlapping, small, 18-26 » long, linear in radial section, 5-10 
across, the outer wall thin, 1-1.5 4, smooth, the inner wall somewhat thicker, about 3 4, 
‘moderately verrucose; aeciospores irregularly ellipsoid or lance-oblong, often acute above, 
16-24 by 23-34 4; wall nearly or quite colorless, moderately thick, 1.5-2.5 y, closely and finely 
but conspicuously verrucose. 
