SPECIES OF ZAUSCHNERIA. 29 
ferences in the shape of the calyx-tube, in its length in pro- 
portion to the segments, and again in the length of the petals 
as compared with the calyx-segments are very considerable ; 
and this without saying that filaments are in some plants 
long-exserted, in others quite included. Still, the floral 
characters are, as we should expect in this strictly epilobioid 
alliance, neither obvious nor of any great significancy when 
compared with those taken from foliage and pubescence. 
The flower is not faithfully represented in the original 
figure in the Reliquie Hænkeanæ ; for the segments of the 
ealyx are always erect or nearly so, never reflexed as therein 
exhibited : and while noting this error I may add that no 
author appears to have mentioned that the corolla in this 
genus is not quite regular. The petals are, indeed, all of one 
size and form in the same species, but the two upper stand 
erect at a right angle with the calyx, while the lower pair are 
simply parallel with it: so that the fully expanded flower is 
a little bilabiate, as it were 
The Zauschnerias are noi, as they have always bean de- 
scribed, suffrutescent. Their stems are, it is true, very hard 
and brittle, and what with their outer bark at length loosened 
and disposed to hang in shreds, they are very ligneous-look- 
ing in the field as well as in the dried specimen. But the 
stems of many even annual Onagrace of Pacific America 
have the same strong induration, attended with a partial shed- 
ding of the fibrous epidermis, which these perennials display. 
* Leaves feather-veined : plants a foot high, or less. 
1. Z.LATIFOLIA. Decumbent and branching from the base, 
more or less villous, but not tomentose, sometimes nearly 
glabrous: leaves thin, ovate to obovate and oblong, acute, 
prominently toothed: petals as long as the calyx-tube which 
is narrowly cylindrical for two lines above the globose base, 
thence widening abruptly into a funnelform throat: stamens 
much exserted : capsule subsessile, glabrous.—Z. Californica. 
