ase ; roof tal len most other Gerania have them united for about two-thirds a 
more 
7,000 feet, the smallest of a tribe ‘of cactaceze was discovered, nt s 
E species of which were fourid in the course of the journey south and south. 
east several 0 bean discovered in Tees. i mean those 
of tug ant whi indicating their intermediate position between rite 
_ Eichinocactus: they approach more closely to Cereus, in which 
xy, as well as the Bae Echinopsis, should perhaps be ‘fadtaded as 5 cade 
Rigas species mentioned above is@istingui shed from all ee pate to 
_. me by its yellowish green flowers, the others havi ing or purple 
-. * flowers. Ihave named it, therefore, Echinocereus viridi 
. A careful examination of the seeds of numerous cactaceae, #8 as indicated 
to me two principal divisions in that family: 1. Cotyledons or less 
i distinct, directed with their edges to the edge, (or towards Saas umbilicus,) 
E and with their faces to the flattened side of the seed; when curved, accum- 
bent. 2. Cotyledons, mostly very distinct, foliaceous s, direct with their 
i s to the faces, and with their faces to the edges of the seed; wards 
“2 ‘the umbilicus;) when curv rved, incumbent, and often circular or Ht. 
_ The first class comprises ’ Mam#pillaria, with a straight embryo; and 
oe ie 
Shae gf 7 
fe we 1 Echinocereus, n : Vetiaousi tubus ule germen productus, sr 
n. gen 
’ viatus- Sepa exteriora s. tubi subulata, in a tomentosis setas 
~~ teos geren a interiora subpetaloidea et rep longiora viuriserialia 
_. corollam breviter infundibuliformem s. sub-campanulatam aemulantia. 
Stamina numerosissima tubo adnata, limbo breviora s. eum subaequantia. 
vix superans. Stigma multiradiatum. Bacca pulviligers 
_ perigonio coronata. — inum testa dura tuberculata 
x curvatus cotyledonibus brevibus contrariis. _ 
y ovate; simple, or mostly branching from the base or 
8, sere few or mostly a great many ribs; bunches of 
owe distant or approximate, often very crowded; vertex 
— lateral; produced from last year’s growth, open- 
t for two or three days in eeeainton closed at 
us, . sp, ovato-glob4Sas, humilis, s sub-13-costa- 
= cok longioribus fuscis, r reliquis albidis, centrali nullo 
fusco; floribus eae a mye 
as 5-10 ae 
“a ‘ E * e 3 
ae “ mM > 
gst as . 4 ‘ ¢ sh 
B 4 - e - . 
Re Ld (2) 
7‘ 
F ¥ 
we 
# 
neh 
