1968] 



LEAFY HEPATICAE OF LATIN AMERICA PART III 



377 



Hyalolepidozia S. Arnell ex Grolle, Rev. Bryol. Lichenol. 32: 179. 1963. [1964] 

 Lepidozia auct. p.p. 



Paracromastigum Schuster, Jour. Hattori Bot. Lab. 26: 275. 196.? . Non Fulford & J. Taylor. 



Stems flaccid, more or less radially symmetric, leafy or becoming more or less 

 stolon-like flagelliform, irregularly branched; branches terminal, leafy, of the Frul- 

 lania and Microlepidozia types, and lateral- and ventral-intercalary, axillary, leafy 

 or flagelliform ; stem in transverse section of a cortical layer of 6 very large cells 

 surrounding the medulla of small cells. Rhizoids from the bases of the underleaves. 

 Line of leaf insertion transverse or nearly so. Leaves bifid, the segments acute. 

 Underleaves similar to the leaves, often slightly smaller. Plants monoicous and 

 dioicous. Male inflorescence terminal becoming intercalary on the stem or branch, 

 the bracts and bracteoles similar to the leaves and underleaves, smaller. Female 

 inflorescence on the stem or a branch, the bracts and bracteoles bifid. Perianth 

 cylindrical below, 3-keeled above. 



Type species: Lepidozia bicuspidata Massalongo, 1885. 



Hyalolepidozia bicuspidata (Massalongo) S. Arnell ex Grolle, Rev. Bryol. Li- 

 chenol. 32: 179. 1963. [1964] 



Lepidozia bicuspidata Massalongo, Nuovo Giorn. Bot. Ital. 17: 239. pi. 22, f. 25. 1885. 

 Hyalolepidozia bicuspidata (Massalongo) S. Arnell, Bot. Not. 115: 213. 1962. non rite 

 public. 



Paracromastigum bicuspidatum (Massalongo) Schuster, Jour. Hattori Bot. Lab. 26: 276. 

 1963. 



Plants filiform, flaccid, more or less radially symmetric, whitish, green, among 

 other bryophytes; stems to 2 cm long, leafy or becoming stolon-like flagelliform or 

 small-leaved, irregularly branched; branches terminal, leafy, of the Frullania and 

 Microlepidozia types, or ventral-intercalary, axillary, leafy or flagelliform. Stem in 

 transverse section of 6 rows of very large hyaline cells surrounding a medulla of 

 about 10 small cells. Rhizoids from the bases of the underleaves. Line of leaf 

 insertion transverse or nearly so. Leaves distant, erect, bifid to one-half or more, 

 the sinus lunulate, the segments lanceolate-acuminate; leaf-cells of the segments 

 averaging 45 X 27 the shorter cells averaging 40 X 36 /a, the walls thin, the cuticle 

 smooth. Underleaves similar to the leaves, often slightly smaller. Plants dioicous. 

 Male inflorescence terminal becoming intercalary on the stem, the bracts concave, 

 monandrous. Female inflorescence terminal on a stem or branch, the bracts and 

 bracteoles in 3 series, bifid to one-third their length, the segments entire. Perianth 

 cylindrical below, weakly 3-keeled above [the mouth ?-material too poor.] 



PI. 101. Fig. 1, a-g. 



Habitat: In wet areas among other hepatics. 

 CHILE: Isla Poluqui, Schwabe 198, ex Hb Herzog (G-11101). 



TIERRA DEL FTJEGO: Rio Azopardo, Dusen 55 (NY); Staten Island: Port Cook, Spegaz- 

 zini 45 b (type G) ; Mt. Richardson, Spegazzini 159 (G-11100). 



References 



Arnell, S. 1963. Hepaticae of South Africa. Stockholm. 411 p. 



Schuster, R. M. 1963. Studies on Antipodal Hepaticae. I. Jour. Hattori Bot. Lab. 26: 

 185-309. 



