Part 6, 1921] AECIDIACEAE 405 
202. Dicaeoma Menthae (Pers.) S. F. Gray, Nat. Arr. 
Brit. Pl. 1:542. 1821. 
Uredo Menthae Pers. Syn. Fung. 220. 1801. 
Puccinia Menthae Pers. Syn. Fung. 227. 1801. 
Aecidium Menthae Sow. Engl. Fungi pl. 398, f. 3. 1803. 
Uredo Calaminthae Strauss, Ann. Wett. Ges. 2:95. 1810. 
Puccinia Clinopodii DC. Fl. Fr. 6:67. 1815. 
Uredo Labiatarum DC. Fl. Fr. 6:72. 1815. 
Uredo Menthastri Link, Ges. Nat. Freunde Berlin Mag. 7:27. 1815. 
Caeoma (Dicaeoma) Menthae Mart. Fl. Erlang. 321. 1817. 
Uredo Clinopodii Schw. Schr. Nat. Ges. Leipzig 1:70. 1822. 
Caeoma Labiatarum Schlecht. Fl. Berol. 2: 128. 1824. 
Puccinia Labiatarum Schlecht. Fl. Berol. 2: 133. 1824. 
Caeoma menthatum Link, in Willd. Sp. Pl. 62:47. 1825. 
Puccinia Pycnanthemi Schw. Trans. Am. Phil. Soc. II. 4: 295. 1832. 
Erysibe Labiaiarum Wallr. Fl. Crypt. Germ. 2: 198. 1833. 
Trichobasis Labiaterum Lév. Dict. Univ. Hist. Nat. 12: 785. 1848. 
Uredo Satureiae Cast. Cat. Pl. Marseille Suppl. 89. 1851. 
Aecidium ovoideo-aurantium Bon. Coniom. 45. 1860. 
Puccinia Calaminthae Fuckel, Symb. Myc. 56. 1869. 
Puccinia Menthae americana Burrill, Bull. Ill. Lab. Nat. Hist. 2: 191. 1885. 
Dicaeoma Pycnanthemi Kuntze, Rev. Gen. 33: 470. 1898. 
OQ. Pycnia amphigenous or caulicolous, gregarious in small groups, usually with the aecia, 
yellowish becoming brown, globoid, 95-160 uw in diameter by 80-120 » high; ostiolar filaments 
25—50 uw long. 
I. Aecia chiefly hypophyllous, caulicolous, or petiolicolous, gregarious, often on distorted 
yellow or purplish areas, cupulate, 0.3-0.4 mm. in diameter; peridium whitish, fragile, the mar- 
gin erect or incurved, lacerate; peridial cells narrowly rhomboidal, 10-16 by 32-45 4, in longi- 
tudinal section slightly overlapping, the outer wall 3-5 » thick, transversely striate, the inner 
wall 2-5 » thick, closely verrucose; aeciospores globoid or ellipsoid, 15-20 by 18-29 yw; wall 
pale-yellow, 1.5—2 wu, closely and conspicuously verrucose. 
II. Uredinia hypophyllous, scattered, occasionally in annular groups, rarely on brownish 
spots, round or-oval, rather small, 0.3-0.7 by 0.3-1 mm., early naked, pulverulent, golden- or 
cinnamon-brown, ruptured epidermis noticeable; urediniospores globoid or ellipsoid, 16-22 by 
20-26 yw; wall yellowish, about 1.5 » thick, moderately echinulate with blunt points, the pores 
indistinct, about 3, equatorial. 
III. Telia hypophyllous, sometimes caulicolous, numerous, scattered or grouped, occasion- 
ally confluent, roundish or oblong, 0.4-1 by 0.4-1.5 mm., early naked, pulverulent, dark choco- 
late-brown, ruptured epidermis inconspicuous; teliospores broadly ellipsoid, 18-24 by 19-30 u, 
rounded at both ends, slightly or not constricted at septum; wall chestnut-brown, rather thick, 
1.5-2.5 p, thicker at apex, 3-6, with a lighter papilla, moderately verrucose; pedicel pale, 
up to twice length of spore. 
On LAMIACEAE: 
Blephilia ciliata (L.) Raf., Indiana. : eee 
Blephilia hirsuta (Pursh) Torr., Illinois, Indiana, Iowa, Missouri, West Virginia. a 
Clinopodium vulgare L., Connecticut, New York, Pennsylvania, Virginia, West Virginia; 
Ontario. 
Cunila origanoides (L..) Britton (C. Mariana L.), Arkansas, Illinois, Indiana, Kentucky, 
Maryland, Missouri, New Jersey, Pennsylvania, Virginia. 
Hedeoma Drummondii Benth., Montana. 
Hedeoma oblongifolia (A. Gray) A. Heller, New Mexico. 
Hedeoma pulegioides (1,.) Pers., Illinois, Pennsylvania. 
Hedeoma sp. Arizona. 
Koellia albescens (T. & G.) Kuntze, Arkansas. ee 
Koellia flexuosa (Walt.) MacM. (Pycnanthemum linifolium Pursh, P. flexuosum B.S.P.), 
Arkansas, Michigan, Missouri, New York, Pennsylvania, Virginia; Ontario. ; 
Koellia incana (L.) Kuntze (Pycnanthemum incanum Michx.), New York, Pennsylvania, 
West Virginia. ; . 
Koellia mutica (Michx.) Britton (Pycnanthemum muticum Pers.), Connecticut, Delaware, 
New Jersey, New York, Pennsylvania, West Virginia. _. . 
Koellia pilosa (Nutt.) Britton (Pycnanthemum pilosum Nutt.), Illinois, Indiana, Iowa, 
Kansas, Missouri, West Virginia. on a 
Koellia verticillata (Michx.) Kuntze (Pycnanthemum verticillatum Pers.), West Virginia. 
Koellia virginiana (L.) MacM. (Pycnanthemum lanceolatum Pursh, P. virginianum Durand 
& Jacks.), Connecticut, Indiana, Iowa, Missouri, Nebraska, New Jersey, New York, 
North Dakota, Pennsylvania, Wisconsin; Ontario. 
Mentha arvensis L., Florida, New York; Nova Scotia. . —_ 
Mentha canadensis I,., Colorado, Illinois, Indiana, Iowa, Maine, Massachusetts, Michigan, 
Minnesota, Montana, Nebraska, New York, North Dakota, Oregon, Pennsylvania, 
