1898 ] 
5. Nutlets with rugosity 
prolonged into barbed 
spines. 
6. Nutlets with very thin, 
often crustaceous or 
pearly dotted or tuber- 
cled pericarp attached 
to gynobase along the 
whole grooved ventral 
face, or at base by trian- 
gular area; fitting to- 
gether by plane faces. 
CRYPTANTHE. 
EREMOCARYA. 
(1). Nutlets unlike or only 
one or two maturing: 
calyx articulated with 
and easily falling from 
rachis, 
on 
tN 
— 
- Four nutlets maturing: 
not of extreme xerophy- 
tic habit. 
More xerophytic. 
a, 
Ww 
— 
. Nutlets very large, pro- 
truding beyond calyx; 
pericarp _crustaceous, 
silvery white. 
(4). Calyx circumscissile. 
(5). Calyx lobes with long, 
foliose tips, mostly 
thickly beset with long, 
needle-like hairs: more 
extremely xerophytic. 
(6). Species with amphicar- 
pous nutlets. 
FLORA OF LOWER SONORAN AND ARID ZONES 
Western N. America 
Two species. 
Many species, 
Cryptanthe angusti- 
folia. 
C, crassipetala. 
Many North Ameri- 
can species 0 
Cryptanthe. 
hh 
Eremocarya micran- 
tha. 
Cryptanthe Jamesii. 
In several groups. 
C. Torreyana. 
C, leiocarpum. 
C. intermedium. 
C. ambigua. 
C. barbigera. 
None. 
Chili 
None. 
Many species. 
(E.) aspera. 
(E.) Bridgesii. 
(E.) congesta. 
(E.) carrizalensis. 
(E.) minutiflora. 
(E.) glareosa. 
(E.) chetocalyx. 
(E.) debilis ? 
(E.) axillare ? 
(Eritrichium) parvi- 
flora. 
(E.) gnaphalioides, 
and most amphicar- 
pous species. 
None. 
(E.) longiseta. 
(E.) micrantha. 
(E.) calycina. 
(E.) diffusum. 
(E.) diplotrichium. 
Fourteen species. 
