SYNOPSIS OF THE RHIZOCARPER. 279 
tufted or wide- -creeping. Petiole 1-6 in. long; leaflets deltoid, 
¢ 
¢ e to 
the upper part of the base of the conceptacle. Conceptacles ets 
zontal, round-oblong, persistently tomentose, unbordered, 1-6th t 
1-5th in. long; basal teeth prominent. Sori about 15 
Var. M. mucronata Bs Br, in Sillim. Journ. ser. 2, iii. 55. 
Leatlets and conceptacles less niles Pedicels short. — M. brevipes 
Var. M. uncinata A. Br. in Flora, 1839, 300. — More robust. 
Bodice! often longer than the pid of which the basal teeth 
are very Banues t, the upper one hooked. Sori 20-24. 
H British Columbia, Bary ee and ‘Western United States 
down to Texas, New ae ae and Mex 
19. mexicana A, Br. in Berl. csiten 1870, 747.—Middle- 
sized, subterrestrial, with eee and pedicels clustered at the con- 
oo nodes. Petiole 1-4 in.; ; leaflets deltoid, slightly silky, 
: i und 
the conceptacle. Conceptacle round-oblong, horizontal, 4 in. 
long, perneney tomentose, a wh basal teeth none or very 
—18 
Hab. In " Mexioe, near Talisco, Beechey! San Luis Potosi, 
Parry é Palmer 1010! 
20, rnEsti A, Br, in Berl. Monatber. 1870, 746.—M. striata 
Ernst, non Mett. — Aquatic or subterrestrial, middle-sized, with 
ab, Caracas: Ernst 
21. M. concinna, n. sp. — Subaquatic, wide- trailing, small or 
middle-sized. Petiole £ 1h i in. ; leaflets deltoid, glabrous or slightly 
) ntire. Pedicels 
solitary, erect, 4-4 in. long, inserted in the middle of the base of 
the concepta tacle. “ Conceptacle obl Ong posinouie’ 3 in. long, per- 
sistently tomentose, unbordered, without Sori about 10. 
Hab. Paraguay, in in marshes near oe Koes ide ‘Balansa 1127 ! 
22. M. Burcuenun A. a, in Berl. Monatber. 1863, 429. — M. 
pumila E. Meyer. — M. pusilla A. Br. — M. minuta and filiformis 
Burch. — Subterrestrial Ge or uate, wide- trailing, the former (M. 
4 
of it horizontal, nearly square, 
1-12th in. diam., persisten ently to mentose, unbordered; upper basal 
tooth distinct ; lower obsolete. 
Hab. Cape Colony, as far north as the Transvaal. 
