Part 6, 1921] AECIDIACEAE 407 
peridium erect, lacerate; aeciospores angular, globoid or oblong, 16-25 by 24-39 yu; wall minutely 
and closely verrucose. 
II. Uredinia hypophyllous, scattered, occasionally confluent, roundish or oval, 0.3-1.5 
mm. across, early naked, pulverulent, ochraceous, ruptured epidermis noticeable; uredinio- 
spores obovoid, 16-21 by 22-30 u; wall pale-yellow, 1-2 » thick, moderately and bluntly echi- 
nulate, the pores often obscure, about 3, equatorial. 
III. Telia hypophyllous, numerous, scattered or in small groups, roundish, 0.3-1 mm. a- 
cross, early naked, pulverulent, chocolate-brown, ruptured epidermis inconspicuous; telio- 
spores broadly ellipsoid or globoid, 19-25 by 25-36 u, rounded at both ends, slightly or not 
constricted at septum; wall chestnut- or dark reddish-brown, rather thick, 2-4 », somewhat 
thicker above, 3-7 », moderately and conspicuously tuberculate; pedicel pale, up to twice 
length of spore, often wider near the base. 
On LAMIACEAE: 
Madronella lanceolata (A. Gray) Greene (Monardella lanceolata A. Gray), California. 
Madronella macrantha (A. Gray) Greene (Monardella macrantha A. Gray), California. 
Madronella nana (A. Gray) Greene (Monardella nana A. Gray), California. 
aes ioe odoratissima (Benth.) Greene (Monardella odoratissima Benth.), California, 
regon. 
Madronella parvifolia (Greene) Rydb. (Monardella parvifolia Greene), New Mexico. 
Madronella undulaia (Benth.) Greene (Monardella undulaia Benth.), California. 
Madronella villosa (Benth.) Greene (Monardella villosa Benth.), California, Oregon. 
Madronella viridis (Jepson) Arth. (Monardella viridis Jepson), California, 
Tyre Locality: Santa Cruz, California, on Monardeila villosa. 
DisTRIBUTION: Northern Oregon to southern California and western New Mexico. 
Exsiccatt: Barth. N. Am. Ured. $59, 753; Ellis & Ev. Fungi Columb. 1886; Sydow, Ured. 1775. 
205. Dicaeoma Leonotidis (P. Henn.) Arthur. 
Uredo Leonotidis P. Henn. in Engler, Pfl. Ost.-Afr. C:52. Je 1895. 
Aecidium Leonotidis P. Henn. in Engler, Pfl. Ost.-Afr. C:52. Je 1895. 
Uredo cancerina P. Henn. Hedwigia 34: 330. D 1895. 
Uredo leonoticola P. Henn. Hedwigia Beib!. 38:69. 1899. 
Puccinia leonotidicola P. Henn. in H. Baum, Kun.-Samb. Exp. 2. 1903. 
Puccinia Leonotidis Arth. Mycologia 7: 245. 1915. 
O. Pyenia hypophyllous; pycniospores oblong, 2.5-3 by 4-5 nu. 
I. Aecia amphigenous, chiefly hypophyllous, gregarious on yellowish spots, sometimes 
solitary, pustulate; peridium finally cupulate; aeciospores globoid, oblong, or ovoid, 20-24 by 
20-32 w; wall hyaline or pale-yellow, verrucose. 
Il. Uredinia amphigenous, numerous, scattered or grouped, roundish, small, 0.2-1 mm. 
across, early naked, pulverulent, cinnamon-brown, ruptured epidermis noticeable; uredinio- 
spores oblate-spheroid, 21-27 » broad by 19-23 » high; wall cinnamon-brown, rather thin, 
1-1.5 w, thicker above, 1.5-2 y, finely and closely echinulate, the pores 4 or 5, basal, around 
the hilum. 
III. Telia amphigenous, few, on indistinct yellowish-brown spots, small, about 0.5 mm. 
in diameter, rather pulverulent, brown; teliospores ellipsoid, 18-23 by 25-32 », rounded at both 
ends, slightly or not constricted at septum; wall yellowish-brown, smooth, thickened at apex up 
to 5 » with a papilla; pedicel hyaline, as long as spore. 
On LAMIACEAE: . : : 
Leonotis nepetaefolia (I,.) R. Br., Cuba; Bahamas; Jamaica; Porto Rico; Santo Domingo. 
Typ LocaLtity: Africa, on Leonotis velutina. 
DistRiBUTION: West Indies; also in South America and Africa. 
Exsiccatt: Barth. N. Am. Ured. 781, 1658. 
206. Dicaeoma fuscatum (Arth. & Holway) Arthur. 
Puccinia fuscata Arth. & Holway; Arth. Am. Jour. Bot. 5: 486. 1918. 
O. Pycnia epiphyllous, crowded in small groups 0.8-1 mm. across, inconspicuous, light- 
or dark-brown, globoid or slightly flattened-globoid, 128-144 by 128-150 y,; ostiolar flaments 
short, up to 35 » long. ; 
I. Aecia hypophyllous, in small groups of two to five opposite the pycnia, round, 0.1- 
0.4 mm. across; peridium wanting but with a more or less definite layer of mycelium bordering 
the aeciuum, opening by a slit or pore in the overarching epidermis; aeciospores ellipsoid, ellip- 
soid-oblong, or globoid, 23-29 by 26-33 y; wall colorless, 1.5 » thick, closely and coarsely verru- 
cose. 
