SYNOPSIS OF THE RHIZOCARPER. 275 
. M. porycarpa Hook. & Grey. Ic. Fil. t. 160. — M. brasiliensis 
el Ic. Crypt. 122, t. 73.—Large, aquatic, glabrous, wide-creeping. 
Petiole 4-1 ft. ; leaflets thin, deltoid, 4-1 in. long and broad; outer 
border rounded and entire. Conceptacles 10-20, placed on short 
curved pedicels ermine from the petiole one above another some 
distance from its base, nearly globose, 1-12th in. long, not com- 
pressed, glabrescent, without border or basal teeth, its veins 
anastomosing midway between the sutures. Sori about 10. 
Hab. Tropical  heatigl and Society Islands. Var. mexicana 
A. Br. is a form with fewer conceptacles, beginning lower down on 
the petiole; M. picta Fée, a variety with the leaves marked with 
conspicuous brown streaks in the areole formed by the veinlets ; 
and M, subangulata A. Br., a small variety cet fewer rather angular 
tomentose concaptacles. M. Stratiotes A. Br., gathered by Spruce 
on the Lower Amazon, is perhaps a robust aviaty of polyc sail with 
an sreeregge stout rhizome and petiole, but the fruit is entirely 
unknow 
2. M. quaprironiaTa Linn. Sp. 1563; Schk. Crypt. t. 1738. 
Large, aquatic, wide- Reet 0 ig: Petiole 3-6 in ‘oan deltoid, 
glabrous, 4-3 in. long; o edge rounded and e Pedicels 
2~4-nate, 4-1 in. long, a Gbinphe with each Bes: dnd adnate 
to the base of the petiole and upper part of bon base of the 
conceptacle. Conceptacles round-oblong, 4-4 i long, usually 
heey se when mature, not bordered; basal teeth minute. 
6-20. 
Hab. Central Europe to ee and the North of India. Rare 
in ve United States (New Eng 
. M. Bro 
rownn A. Br. in Berl. Monat. 1863, 418. — M. quadri- 
pi ReBr. Prodr: 167. — Aquatic, wide- egg gla abrous, with 
habit of M. quadrifoliata. Petiole reac 9 in.; leaflets deltoid, 
4-1} in. long and mo ee outer edge nanetiry entire, P 
1-83-nate, usually er ee connate, obscurely 
oO 
Hab. New South Wales, ee Brown! R. Cunningham! 
4. M. macropus Enge illim. Journ. ser. 2, iii. 56.— 
Large-sized, wide-trailing, with r habit of M. quadrifoliata. Petioles 
teach 6-8 in.; leaflets deltoid, rt in. long and broad, slig' 
2-4-nate, erect, 3-4 
one-fourth to one-third 
of their length, and adnate to the base of a petiole and conceptacle. 
Coneeptacle oblong, obliquely ascending, tomentose, 1-5th in. long; 
teeth small. Sori about Lag ims 
. oF lil 
on ee ee Berl. ee 1863, 421; Kuhn in 
Fi. otha i. 652, tab. 80, figs. 6-8.—M. striata Mett. in Crypt. Nov. 
Gran. 894. — Aquatic, pris vide-crbaganis Petiole 6-8 in. 
long 5 leaflets deltoid, about -* in. long and broad ; er edge 
ounded entire. Pedicels 2-nate, } in. long, not connate, 
