Parr 7, 1922] AECIDIACEAR 487 
III. Telia amphigenous, crowded on discolored areas, oval or oblong, 0.2-1.5 mm. long, 
early naked, pulverulent, dark chocolate-brown, ruptured epidermis evident; teliospores 
ellipsoid or oblong-ellipsoid, 21-23 by 48~66 p, rostriform at apex, rounded below, not con- 
stricted at septum; wall dark chestnut-brown, thick, 2.5-4 , lighter at apex, golden-brown, 
13-20 » thick, closely and finely verrucose; pedicel colorless below, golden-brown and en- 
larged next to spore, 10 by 42-65 uw, enlarged at base into a bullbose swelling, 12-16 uw in di- 
ameter, 
On EUPHORBIACEAE: 
Aklema caracasana (Klotzsch & Garcke) Millsp. (Euphorbia caracasana Klotzsch & Gareke), 
Guatemala. 
Aklema cotinifolia (I,.) Millsp. (Euphorbia cotinifolia I,.), Mexico (state), Oaxaca; 
Guatemala. 
TYPE LOCALITY: Oaxaca, Mexico, on Euphorbia cotinifolia. 
DISTRIBUTION: Southern Mexico and Central America. 
Exsiccatr: Barth. Fungi Columb. 2559; Sydow, Ured. 1521, 2465. 
9. Bullaria velata (Ellis & Ev.) Arthur & Mains. 
Uredo velata Ellis & Ev. Bull. Torrey Club 22: 435. 1895. 
Puccinia Euphorbiae minor Holway, Bot. Gaz. 24:31. 1897. 
Puccinia velata Arth. Am. Jour. Bot. 5: 472. 1918. 
O. Pycnia amphigenous, gregarious in groups 0.5-1 mm. in diameter, on yellowish spots, 
rather inconspicuous, light-brown, flattened-globoid, 58-96 by 39-64; ostiolar filaments 
agglutinated into a column up to 60 » long. 
II. Uredinia hypophyllous, crowded on yellowish spots 0.4-1 cm. in diameter, or scattered, 
oval or oblong, 0.5-1.5 mm. long, early naked, pulverulent, cinnamon-brown, ruptured epider- 
mis conspicuous; urediniospores ellipsoid or obovoid, 18-26 by 29-36 »; wall of two layers, 
the inner golden-brown, the outer colorless, 1.5—3.5 » thick, moderately or sparsely echinulate, 
the pores about 6-8, scattered, rather indistinct. 
III. Telia hypophylious, scattered or crowded on yellowish spots with the uredinia, 
oval, 0.2-1.5 mm. long, early naked, pulverulent, blackish, ruptured epidermis conspicuous; 
teliospores ellipsoid, 23-31 by 37-52 u, acute above, rounded below, not or slightly constricted 
at septum; wall dark chestnut-brown, 3-5 » thick, thickened at apex, 5-13 un, closely verru- 
cose; pedicel colorless in lower portion, golden-brown and enlarged next to spore, 6-7 by 
29-48 wu, swollen at base up to 12 uw in diameter. 
On EUPHORBIACEAE: 
Aklema ovata (Schlecht.) Millsp. (Alectoroctonum ovatum Schlecht., Euphorbia Schlechten- 
dahlit Boiss.), Jalisco, Morelos. 
Aklema petiolare (Sims) Millsp. (Euphorbia petiolaris Sims), Mona Island; St. Thomas. 
Aklema Scotana (Schlecht.) Millsp. (Euphorbia Scotana Boiss.), Oaxaca, Veracruz; Guate- 
mala. 
Tyre Locality: Island of Oahu, Sandwich Islands, on Euphorbia cordata. 
DISTRIBUTION: Southern Mexico and the West Indies; also in Hawaii. 
InLustrations: Holway, N. Am. Ured. 1: pl. 26, f. 91a, b. 
Exsiccati: Sydow, Ured. 1871, 1872. : 
10. Bullaria Gouaniae (Holway) Arthur & Mains. 
Puccinie Gouaniae Holway, Ann. Myc. 3:21. 1905. 
O. Pycnia amphigenous, on yellowish-brown, gall-like hypertrophies 0.5—5 mm. in diam- 
ter, light-yellow, punctiform, inconspicuous, globoid, 71-144 w in diameter; ostiolar filaments 
55-96 pu long. 
II. Uredinia of the primary form amphigenous, crowded upon gall-like thickenings of 
the leaf 1-4 mm. across, surrounding the pycnia, oval or oblong, 0.2-0.7 mm. long, early 
naked, dark cinnamon-brown, somewhat pulverulent, ruptured epidermis evident; paraphyses 
none; urediniospores obovoid or triangular-obovoid, 21-27 by 26-32 »; wall ciunamon-brown, 
2.5-4 yw thick, sparsely and strongly echinulate, the pores 2, equatorial; secondary uredinia 
usually hypophyllous, scattered, the sori arising superficially from hyphal masses developing 
from beneath the epidermis, circular, 0.1-0.3 mm. in diameter, dark cinnamon-brown, pul- 
verulent, ruptured epidermis inconspicuous; paraphyses numerous, peripheral, cylindric or 
somewhat clavate, incurving, 12-18 by 50-80 y, usually 1-septate, the wall uniformly thin, 
