360 
Pteridophyten. 
dulosa; D. cheilanthoides, var. subplana; D. aspidioides, var. sub- 
hastata; D. scalpturoides, var. jamaicensis. C. H. Ostenfeld. 
Underwood, L. M., American ferns. VIII. Apreliminary review 
of the North American Gleicheniaceae. (Bull, of the Torrey 
Botanical Club. XXXIV. p. 243—262. textfig. 1 and 2. May [July 10]. 
1907.) 
Under the name Dicranopteris Bernhardi (1806), (given to replace 
Mertensia Willd., 1804, invalidated by Mertensia Roth, 1793, applied 
to a genus of Boraginaceae ), the author lists with a descriptive key, 
notes on distribution, and references to illustrations, some 18species 
of North American Gleicheniaceae, as follows, those that are not 
new being here first transferred to the genus Dicranopteris, mainly 
from either Gleichenia or Mertensia: Dicranopteris Bancroftii (Hook.) 
Underw., from Jamaica, Central und South America; D. bicolor 
(Christ) Underw., from Costa Rica; D. Brunei (Christ) Underw., 
from Costa Rica, a near ally of D. Bancroftii ; D. costaricensis 
Underw., sp. nov., from the volcanoes Poas and Turrialba in 
Costa Rica; D. Cubensis Underw., from Cuba; D. farinosa (Kaulf.) 
Underw., (syn. M. subtrisperma Fee), known only from Guade¬ 
loupe; D. flexuosa (Schrad.) Underw., type from Brazil, generally 
distributed throughout tropical America at low elevations; D.fulva 
(Desv.) Underw., type from Jamaica, common in the West Indies 
and from Mexico to Panama and formerly confused under G. pu- 
bescens Willd., a South American species; D.furcata (L.) Underw., 
known only from the craters of extinct volcanoes of Martinique, 
Guadeloupe, and St. Kitts; D. intermedia (Baker) Underw., (syn. 
G. axialis Christ), known only from Costa Rica; D. Jamaicensis 
Underw., confined to Jamaica (type Underwood 1511), formerly 
confused with the Peruvian G. Matthewsii Hook.; D. mellifera 
(Christ) Underw. and D. orthoclada (Christ) Underw., both known 
only from Costa Rica; D. palmata (Schaffner) Underw., here first 
described, the type being Pringle 6129 from Orizaba, Mexico, the 
species also occurring in the Blue Mountains of Jamaica; D. pec- 
tinata Willd.) Underw., general in tropical America; D. pteridella 
(Christ) Underw., D. retroflexa (Christ) Underw., and D. strictissima 
(Christ) Underw., all 3 being known only from Costa Rica. 
Three species are mentioned among species inquirendae viz.: 
Mertensia gleichenioides Liebm., 1849; G. trachyrhizoma Christ, 1906; 
and G. brevibubis Christ, 1906.) 
The following Old World species are here formally transferred 
to Dicranopteris: D. glauca (Thunb.) Underw., the type from Japan; 
D. glabra (Brack) Underw., the type from Hawaii; D. gigantea 
(Wall.) Underw., the type from Nepal; D. linearis (Burm.) Underw., 
the type from Java; D. longissima (Blume) Underw., the type from 
Java; D. Arachnoides (Hassk.) Underw., the type from Java. 
The 4 genera of Gleicheniaceae are separated by means of the 
following key: 
Sterns simply pinnatifid or pinnate. 
Sori borne on the ends of ordinary veins; rootstocks cree¬ 
ping Platyzoma. 
Sori borne on horseshoe-shaped receptacies; rootstocks erect. 
Stromatopteris. 
Sterns pseudo-dichotomous, once to many times forking. 
