XIII. TWO NEW SPECIES OF FONTINALIS. 



JULES CARDOT. 



1. Fontinalis holzingeri, sp. nov. (Plate XXL, 2.) 



Planta sat mollis, lurido-viridis, subnitens. Caulis basi longe 

 denudatus, flexuosus, 12-20 centim. longus, irregulariter pinna- 

 tus, ramis ascendentibus, gracilibus, apice cuspidatis. Folia 

 sat remota, rigidiuscula, erecto-patentia, apice caulis et ramorum 

 convoluto-imbricata, dimorpha : caulina magna, plana, oblongo- 

 vel lineari-lanceolata, sensim angustata, late acuminata, obtu- 

 siuscula subacutave Integra, 3.5-5 millim. longa, 1-1.5 lata ; 

 ramea minora, marginibus inflexis subcanaliculata, apice obtu- 

 siusculo acutove, integro vel obsolete denticulate, 2.5-3.5 millim. 

 longa, .6-. 8 lata. Cellulag alares oblongae vel subquadratse, 

 parum distinctas, ceterae longe lineares, subflexuosae, sat chloro- 

 phyllosae, parietibus sat firmis, superiores breviores. Flores 

 feminei in caulis parte superiore numerosi ; folia perichastialia 

 juniora orbiculari-ovata, apiculata, apiculo obsolete denticulato. 

 Fructus ignotus. Planta mascula femineae similis ; folia peri- 

 gonialia perichaetialibus subsimilia. 



Species closely related to F. missourica, but distinct by the 

 leaves, which are less soft, of a firmer texture, of longer and 

 thin-walled cells, and the shorter and often subobtuse acumen. 

 The dimorphism of the leaves is little pronounced, and, on this 

 account, F. holzingeri rather resembles some species of the 

 group Malacophyllce, but is distinguished from these species by 

 the firmer leaves and the concave subcanaliculate branch leaves. 



Habitat : At the second falls of Granite river ascending from 

 Lake Saganaga (June 17, 1897). See MINN. EOT. STUDIES, 

 June 15, 1898, p. 43, where a preliminary description of this 

 species appears. 



2. Fontinalis umbachi sp. nov. (Plate XXII., i.) 



Planta sicca rigidula, inferne obscure, superne lurido-viri- 

 dis. Caulis basi denudatus, 7-15 centim. longus, irregulariter 

 pinnatus, ramis remotis patulis vel erecto-patulis, apice cuspi- 

 datis. Folia rigidula, erecto-patula, apice caulis et ramorum 



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