Algae. — Eumycetes. 475 



chymatica, dein vesiculosa et ruptura in membranam monostro- 

 maticam expansa. Sporae (gonidia), ut in Eryothrichia, divisione 

 obliqua in cellulis frondis gignuntur. Reproductio sexualis ignota. 



Die Gattung enthält nur 1 Art: P. coccinea (J. Ag.) Rosenv. (= 

 Porphyra coccinea J. Ag.). 



Erythrocladia n. gen. {Bangiaceae). Thallus horizontaliter ex- 

 pansus, e filis ramosis, aliis algis adfixis, radiatim egredientibus, 

 initio inter se discretis, dein in discum tenueni unistratosum con- 

 fluentibus, constans. Crescentia filorum apicalis. Sporangia eodem 

 modo ac in genere Erythrotvicliia in cellulisj intercalaribus vel rarius 

 terminalibus gignuntur. Generatio sexualis adhuc ignota. 



Die Gattung enthält 2 neue Arten: E. irvegidaris Rosenv. und 

 E. subnitegra Rosenv. 



Kylinia n. gen. {Helminothocladiaceae). Plantae minutissiniae, 

 habitu et Crescendi modo Chajitransiae. E cellula basali germinatione 

 sporae orta fila libera plus minus ramosa horizontaliter egrediuntur. 

 Monosporangia in filis terminalia vel lateralia. Antheridia singula 

 vel bina, in cellulis androphoricis erectis, multo angustioribus quam 

 cellulis vegetativis, h5'alinis, terminalia. Carpogonia terminalia vel 

 lateralia vel in cellula basali sita, post foecundationem primo latitu- 

 dine aucta et longitudinaliter divisa. Carpospora ut videtur pauca 

 oblonga vel leviter curvata, in una planitie subflabellatim disposita. 



Die Gattung enthält nur eine Art: K. rosidatn Rosenv. n. sp. 



Die neu beschriebenen Arten und Varietäten sind: Erythrocla- 

 dia irregidaris, E. suhintegra, Chantvansia gyriandva, Ch. rhipidan- 

 dra, Ch. haltica, Ch. moniliformis, Ch. Thuretii (Born) Kyl. var. 

 agama, Ch. attemiata, Ch. stricta, Ch. virgahda (Harv.) Thur. var. 

 tetrica, Ch. niacida, Ch. polyhlasta, Ch. huniilis, Ch. leptoiienia, Ch. 

 reducta, Ch. cytopliaga, Ch. Diimontiae, Ch. emergens, Ch. immersa, 

 Ch. Polyides, Ch. pectinata K^'lin var. cimhrica und Kylinia rosidata. 



Bei den meisten Arten werden originale Abbildungen gegeben 

 und über alle Formen eine Reihe von Beobachtungen über die 

 Morphologie und Biologie mitgeteilt. N. Wille. 



Hone, D. S., The Pesisales, Phacidiales and Tuberales of Min- 

 nesota. (Minn. bot. Stud. IV. p. 65—132. pl. 14—19. 1909.) 



The paper presents a report on the Minnesota Pesisales, 

 Phacidiales and Tuberales, this being a conti nuation of the paper 

 on Minnesota Helvellineae (Mmnesota botanical Studies III; Part 

 3 p. 309; 1904). The author follows the Classification ofSchroeter 

 and Lindau. Following the key to the Orders, families and genera, 

 the author gives a detailed description of the various Minnesota 

 species, based largelj' on personal Observation of Minnesota Mate- 

 rial. Six plates accompan}' the paper and a ver}' füll bibliography, 

 consisting of 245 titles, is appended. Hermann von Schrenk. 



Hone , D. S., Two Basidiomycetes new to Minnesota: 

 Exobasidiuni niycetophihim and Cantharellus retiriigiis. (Minn. bot. 

 Stud. IV. p. 61-64. pl. 11 — 13. 1909.) 



The author describes two fungi, Exobasidiuni viycetophiliim and 

 Cantharellus retirugiis. Both are rare species in the United States, 

 the latter being described for the first time from the United States. 

 Two excellent plates accompany the paper. Hermann von Schrenk. 



