208 LEAFLETS. 
ous or tortuous and recurved, beset at intervals with densely 
subcapitate clusters of flowers, one cluster in the axil of each 
leaf, the leaves often subsessile. Corollas large, white or pinkish 
or purple. Calyx large, commonly concealed altogether by a 
very thick and dense coat of tomentum. Fruits as depressed and 
low as those of any Malva, the carpels not very tomentose, their 
sides without reticulation, one-seeded, promptly dehiscent, the 
two perfectly distinct valves falling away separately together with 
the ripe seed. 
The genus thus defined has a number of described species, and 
perhaps an equal number undescribed. I denominate it MALA- 
COTHAMNUS, and with the species I shall here do little beyond 
indicating the most typical, or in other words fixing the type of 
the genus. 
M. ARCUATUS. Greene, Man., under Malveopsis. 
M. Fremonti. Torr., < Malvastrun. 
M. ORBICULATUS. Greene, Fl. Fr., “ X 
M. Davipsonir. Robinson, We 
M. PALMERI. Watson, ad Be: 
M. ABORIGINUM. Robinson, x f 
M. DENSIFLORUS. Watson, e S 
M. MARRUBIOIDES. Dur. & Hilg., “ Se 
M. FAscIcuLaATus. Nutt. in T. & G., “ Malva. 
The second is a small group of desert annuals, the habital and 
floral peculiarities of which are given in Gray’s Synoptical Floral 
under an asterisk and as heading the whole line of Malvastra, 
the subsectional adjective employed being Pedunculosa. I assign 
this series the generic name EREMALCHE. 
E. ROTUNDIFOLIA. Gray, under Malvastrum 
E. PARRYI. Greene, Ge w 
E. Sg, Gray, i£ bh 
From my way of viewing things, the genus Sida, as set forth 
by Bentham and adopted by Gray, is less mixed by diversity of 
types than is Malvastrum; yet here also, the section defi ned by 
Gray and named by him Pseudo-Malvastrum, is to my mind 
