k NEW SPECIES OF DIPLACUS. 101 



lamina; /, from near base of vaginant lamina; (/, tooth of 

 peristome; h, male plant; i, perigonial leaf; jj antlieridium. 



Plate II. a, part of plant, natural size; &, from one of the 

 larger branches; c, ultimate branchlet; d^ one of the amphi- 

 gastria of the characteristic form; d\ d^^, d^''^, other forms, 

 the last from an ultimate branchlet; e, involucres, dorsal 



J 



view; /, inner involucre, ventral view; gr, involucral leaf; 

 /tj involucral amphigastrion; fc, perigonial leaf. 



A NEW SPECIES OF DIPLACUS. 



By J. BuBTT Davy. 



Diplacus speciosus. Suffrutescent, 2 — 2| feet high; new 

 shoots virgate, very erect from the now somewhat decumbent 

 growth of last year, puberulent and glandular; internodes 

 sometimes 2 inches long: leaves pale-green, broadly lanceo- 



i 



broad, lower half 



entire, upper half dentate, convex above, but margins not 

 revolute: flowers pi'imrose-scented: peduncles about 3 lines 

 long: calyx about 1| in, long, together with the growing parts 

 arachnoid above the coating of resinous globules; tube 

 abruptly inflated, the throat occupying one-half its length; 

 teeth sub-equal, short-triangular, constricted around the nar- 

 row portion of the corolla tube: corolla 1^ in. long by 1^ 

 in- broad, buff-yellow with lines of clear white and of orange 

 down the throat within, well exserted; lobes sub-equal, regu- 

 larly and almost rotately spreading, subcuneate-quadrate, 

 erose, margins somewhat undulated but scarcely crinkled; 

 upper lobes obliquely and retusely truncate, sinus narrow 

 and almost closed by the converging apices: anthers orange- 

 colored. 



In habit, foliage, pubescence and size of corolla this 

 species is near to D. longiflorusy Nuttj from which, however, 

 it is very distinct. The latter plant exhibits a tendency to 

 greater elongation of its parts, especially the internodes, 

 leaves, calyx-teeth and corolla-lobes; the leaves are more 



