Parr 2, 1907] UREDINACEAE 111 
See eas loc. cit. f. 1; Beitr. Krypt. Schweiz 22: f/. 320. 
XSICCATI : Ellis v. N. Am. Fungi 2724, Seym. : i212, 213 ; Ellis & 
Ev. Fungi Columb. 1374, . ia a = 
6. MELAMPSORELLA Schroét. Hedwigia 13: 85. 1874. 
Cycle of development includes pycnia, aecia, uredinia and telia, with distinct alter- 
nating phases; heteroecious. Pycnia subcuticular, aecia and uredinia subepidermal, telia 
in epidermal cells. 
Pycnia hemispherical, without ostiolar filaments. 
Aecia erumpent, definite, oblong, bullate. Peridium colorless, with thin-walled cells. 
Aeciospores ellipsoid ; wall colorless, thin, verrucose, without smooth spot. 
Uredinia barely protruding through the epidermis, dehiscent by a central pore. 
Peridium hemispherical, delicate, cells slightly or not enlarged at orifice. Urediniospores 
borne singly on pedicels, obovate to ellipsoid; wall slightly colored, echinulate,-. pores 
obscure. 
Telia effused, indehiscent. Teliospores globoid to ellipsoid, one-celled ; wall smooth, 
colorless, thin. . 
Type species, Melampsorella Caryophyllacearum Schroét. (on Stellaria media). 
1. Melampsorella elatina (Alb. & Schw.) Arthur. 
Uredo pustulata gp Cerastit Pers. Syn. Fung, 219. 1801. 
Aecidium elatinum Alb. & Schw. Consp. Fung. 121. 1805. 
Oredo Cerastit H. Mart. Fl. Mosq. 231. 1812. 
Hypodermium (Uredo) Stellariarum Tink, Ges. Nat. Freunde Berlin Mag. 7: 28. 1815. 
Uredo pustulaia p Cerastiorum DC. Fl. Fr. 6: 85. 1815. 
Peridermium elatinum Schmidt & Kunze, Deuts. Schwamme 6: 4. 142. 1817. 
Caeoma Cerastii Schlecht. Fl, Berol. 2: 121. 1824. 
Caeoma Caryophyllacearum Link, in Willd. Sp. Pl. 62: 26. 1825. 
Melampsoretla Caryophyllacearum Schrot. Hedwigia 13: 85. 1874. 
Melampsora Cerastit Wint. in Rab. Krypt. Fl. 11: 242. 1881. 
Melampsorelia Cerastit Schrot. Krypt. Fl. Schles. 3!: 366. 1887. 
Exobasidium Stellariae Sydow, Hedwigia Beibl. 38: 134. 1899. 
O. Pycnia epiphyllous, few, scattered, punctiform, inconspicuous, subcuticular, not 
extending much into walls of epidermis, depressed-hemispherical, small, 100-130 # broad, 
40-50 » high. 
I. Aecia from a perennial mycelium, dwarfing the young shoots, and forming witches’ 
brooms; hypophyllous, forming two irregular lines, deep-seated, wholly dropping out of the 
substratum at maturity, roundish or irregularly oblong, large, 0.5-1 mm. across, bladdery, 
soon open by falling away of the upper part; peridium colorless, dehiscence irregular, 
cells with thin inner and outer walls; aeciospores broadly ellipsoid, or nearly globoid, 14-18 
by 16-28 4; wall colorless, thin, 1-1.5, closely and rather finely verrucose. 
ON PINACEAE : 
Abies balsamea (L,.) Mill., Maine, Massachusetts, Michigan, New Hampshire, New York, 
Vermont, Wisconsin ; Prince Edward Island; Labrador ; Newfoundland. 
Abies lasiocarpa Nutt. (A. subalpina Engelm.), Montana, Utah, Wyoming. 
Abies religiosa Lindl., Veracruz. 
II. Uredinia amphigenous, scattered or somewhat grouped, small, round, 0.1-0.4 mm. 
across, orange-red when fresh, pale-yellow when dry; peridium hemispherical, dehiscent 
by a small central orifice, cells elongate at sides, polygonal above, inner and outer walls 
same thickness; urediniospores ellipsoid or obovoid, 12-18 by 16-304; walls pale-yellow, 
rather thin, 1-1.5, sparsely echinulate with short conical points. 
III. Telia hypophyllous, on whitish or pale reddish spots; teliospores within the epi- 
dermal cells, 1-celled, short-cylindrical or polygonal, 13-20 broad ; wall colorless, smooth, 
thin. 
On CARYOPHYLLACEAE : 
Alsine baicalensis Cov. (Stellaria umbellata Turcz.), Wyoming. 
Alsine brachypetala (Bong.) Howell, Washington. 
Cerastium campestre Greene, Colorado, Montana, South Dakota. 
Cerastium occidentale Greene, Montana. 
Cerastium oreophilum Greene, Colorado. 
Cerastium vulgatum J,., Nebraska. ; 
TYPE LOCALITY: Upper Lusatia, Germany, on Pinus Picea (Abies alba). 
