410- NORTH AMERICAN FLORA [VoLUME 7 
On LAMIACEAE: ¢ 
on Hyptis lantanifolia Poir. (Mesosphaerum lantanifolium Kuntze), Cuba; Porto Rico. 
E LOCALITY: Manos in the Amazon region of Brazil, on Mesosphaerum lontanifolium. 
DisTRiBvtTIoN: West Indies: also in Brazil. 
211. Dicaeoma Hyptidis-mutabilis (Mayor) Arthur. 
Puccinia Hyptidis-mutabilis Mayor, Mém. Soc. Neuch. Sci. Nat. 5:496. 1913. 
O. Pycnia not seen. 
I. Aecia amphigenous in crowded groups about 1-2.5 mm. across, round or oblong, 0.2~ 
0.5 mm. across; peridium very fragile and evanescent, frequently less conspicuous than epi- 
dermis; peridial cells irregularly cylindric, 19-26 by 23-32 u in face view, overlapping, the 
outer wall about 3 » thick, smooth, the inner wall 3-4 » thick, conspicuously verrucose; aecio- 
spores ellipsoid, ovoid, or broadly ellipsoid, 16-19 by 21-31 »; wall light-yellow, about 1.5- 
2.5 w thick, closely and coarsely verrucose, the markings somewhat deciduous. 
II. Uredinia hypophyllous, scattered or somewhat grouped, round, 0.1-0.3 mm. in diam- 
eter, early naked, pulverulent, light cinnamon-browu, ruptured epidermis evident; uredinio- 
spores globoid or flattened-globoid, 19-23 u broad by 18-22 u high; wall cinnamon-brown, thin, 
1-1.5 4, moderately or closely echinulate, the pores 2-4, approximately equatorial. 
III. Telia hypophyllous, scattered or somewhat grouped, round, 0.1-0.3 mm. in diameter, 
early naked, pulvinate, pale chestnut-brown, cinereous from germination, ruptured epidermis 
inconspicuous; teliospores ellipsoid or ellipsoid-clavate, 14-21 by 39-57 », rounded above, 
rounded or narrowed below, constricted at septum; wall colorless or pale cinnamon-brown, thin, 
1 wor less, thickened over the germ-pores into a colorless umbo, 3—7 u, smooth; pedicel colorless, 
fragile, about length of spore. 
On LAMIACEAE: : 
Hyptis polystachya H.B.K. (Mesosphaerum polystachyum Cook & Collins), Costa Rica. 
ae LOCALITY: Dept. Magdalena near El Blanco, Colombia, alt. 110 m., on Hyptis mutabilis 
DIstRIBUTION: Costa Rica; also in South America. 
ILLUSTRATION: Mém. Soc. Neuch. Sci. Nat. 5: f. 27. 
212. Dicaeoma caulicola (Tracy & Gall.) Kuntze, Rev. 
Gen. 3°: 468. 1898. 
Puccinia nigrescens Peck, Bot. Gaz.3:35. 1878. Not P. nigrescens Kirchn. 1856. 
Puccinia caulicola Tracy & Gall. Jour. Myc. 4: 20. 1888. 
Dicaeoma Salviae Kuntze, Rev. Gen. 33: 467. 1898. 
Dicaeoma nigrescens Kuntze, Rev. Gen. 33: 469. 1898. 
Puccinia Salviae-lanceolatae Bubak, in Sydow, Monog. Ured. 1: 294. 1902. 
O. Pycnia amphigenous on spots with or opposite aecia, brownish, flattened-globoid, 
100~125 uw wide by 80-95 uw high; ostiolar filaments up to 55 u long. 
I. Aecia chiefly hypophyllous, gregarious, usually on brownish spots 3-10 mm. across, 
short-cylindric, 0.2-0.4 mm. in diameter; peridium white, fragile; peridial cells rhomboidal or 
rectangular in longitudinal radial section, 15-16 by 30-45 yw, broadly elliptic in face view, 29- 
39 » wide, abutted or somewhat overlapping, the walls 2.5-3 » thick, the outer smooth, the 
inner rather sparsely and finely verrucose; aeciospores angularly globoid or ellipsoid, 16-21 by 
19-26 yw; wall pale or hyaline, rather thin, 1-2 y, very closely and finely verrucose. 
II. Uredinia amphigenous, numerous, scattered, roundish, small, 0.2-0.6 mm. across, 
early naked, pulverulent, cinnamon-brown, ruptured epidermis noticeable; urediniospores 
oblate-spheroid, 19-23 » broad by 16-20 wide; wall golden- or cinnamon-brown, J-L.Sp 
thick, moderately and finely echinulate, the pores 2 or 3, subequatorial. 
Ill. Telia amphigenous or caulicolous, numerous, scattered, sometimes confluent, roundish 
or oval, small, 0.3-1 mm. across, early naked, compact, becoming pulverulent, blackish-brown, 
ruptured epidermis not noticeable; teliospores oblong or oblong-clavate, 16-26 by 29-48 u, 
on stems generally over 35% long, rounded or obtuse above, rounded or narrowed below, 
slightly constricted at septum; wall chestnut-brown, 2-3 » thick, thickened at apex, 6-104, 
closely and minutely verrucose; pedicel pale, persistent, two or three times as long as spore, or 
on leaves shorter, the wall 1-3 » thick. 
