ROBINSON: PTERIDOPHYTA OF THE HAWAIIAN IsLANDsS 233 
2, MARSILEACEAE 
Perennial plants; leaves 2 or 4-foliate; sporocarps on peduncles 
which arise with the petioles of leaves or separately from the 
rootstock and bear megaspores and microspores in the same sorus. 
Type species:* Marsilea quadrifolia L. 
MaRSILEA VILLOSA Kaulf. Enum. 272. 1824 
TYPE LocaLity: Oahu, Hawaiian Islands. 
DistRIBUTION: In taro patches, Hawaiian Islands. 
SPECIMENS EXAMINED: Hawaiian Islands, Chamisso B; Gau- 
dichaud B; Remy B. 
M. villosa is closely allied to M. vestita Hook. & Grev. from 
Oregon and California. Brackenridge referred the American 
plant to M. villosa, but the specimens examined indicate that 
the Hawaiian plant is a larger and less hairy species than that 
figured by Hooker and Greville (Ic. Fil. 159. 1829). All speci- 
mens in the Berlin herbarium are sterile; Remy’s specimen has 
narrower leaflets and a more compact rootstock than Chamisso’s. 
SPECIES INQUIRENDA 
Marsilea crenulata Desv. Reported by Hillebrand (Fl. Haw. 
Is. 651. 1888) as collected in Oahu and preserved in the Godet: 
Herbarium, This herbarium is unknown to Dr. W. T. Brigham, 
director of the Bishop Museum at Honolulu. No specimen was 
found by the writer in the Berlin herbarium. 
2. OPHIOGLOSSALES 
Herbaceous, usually succulent plants consisting of a fleshy 
rootstock with fibrous or fleshy roots and one to several leaves, 
the latter €rect or pendent, non-articulate, simple, lobed, or com- 
Pound, the blade sessile or stalked; sporophyls simple or ternately 
compound, arising from the sterile leaf or from the rootstock. 
Sporangia formed each from a group of epidermal and subepi- 
dermal cells, dehiscing by a transverse slit. Prothallia subterra- 
~ 
Mar : S 
‘ si L. is Marsileg natans L. which is based upon Salvinia Mich. Nov. Pl. Gen. 
* 7729. Under the American code, therefore, the name Marsilea L. should be 
used for Saly 
(B inia (Micheli) Adans., while the present genus should be called Lemma 
» Juss.) Adans, 
