H. KYLIN UND C. SKOTTSBERG, (Schwed. Südpolar-Exp. 
Fig. 1. Acrochaetium calenulatum HOWE, X 600. — KyLin gez. 
A. macropus KyLin n. sp. — Textfig. 2. 
Thallus epiphyticus, ad 200 ı altus. Cellula basalis globosa, 15— 
25 1 crassa, fila erecta ramosa I—4 emittens; rami alterni vel oppositi, 
nonnumquam ramosi; cellulae inferiores 9—ıII, superiores 7—9 1 diam., 
diametrum 1-3-plo superantes, chromatophoro stellato pyrenoide cen- 
trali in parte superiore cellulae instructae. Pili hyalini rari. Monosporangia 
lateralia, sessilia vel rarissime pedicellata, alterna vel opposita, ovoidea, 12— 
14 tt longa et 8—10 At crassa. 
Fig. 2. Acrochaetium macropus KyLIN. a—b X 380, c—d x 520. — KyLin gez: 
