266 
CONTRIBUTIONS TO BOTANY. 
aggregated, and cover the spicated branchlets; the pedicel is 
line long; the tube of the calyx is 3^ lines long, the lanceo- 
late segments 1 line long, and it is 1 line in diameterf. 
Species exclusa. 
1 . 
Colletia affinis, Clos. 
= B.etamilia stricta^. 
2 . 
articulata, Phil. 
= Retamilia articulata ^ . 
3. 
australis, Brongn. 
= Discaria australis. Hook. 
4. 
Chacaya, Don. 
= Ochetophila 3-nervis, Pop. 
5. 
crenata, Clos. 
= Notophoena foliosa*. 
6 . 
discolor, Hook. 
= Notophcena discolor*. 
7. 
disperma, DC. 
= Microrhamnus ? 
8 . 
Doniana, Clos. 
= Ochetophila 3-nervis, Pop. 
9. 
Ephedra, Vent. 
= Retamilia Ephedra, Brongn. 
10 . 
inermis, Clos. 
= Ochetophila 3-nervis. 
11 . 
infesta, Brongn. 
= Adolphia infesta, Meisn. 
12 . 
longispina, Hook. 
= Discaria longispina*. 
13. 
Maytenoides, Griseb. 
= Condalia Maytenoides = Scia- 
dophila Maytenoides, Phil. 
14. 
multijlora, M 09 . Sesse 
. = Adolphia infesta, Meisn. 
15. 
nana, Clos. 
= Ochetophila prostrata*. 
16. 
obcordata, Vent. 
= Retamilia obcordata, Brongn. 
17. 
pubescens, Brongn. 
= Discaria australis. Hook. 
18. 
serratifolia. Vent. 
= Notophcena serratifolia*. 
19. 
serratifolia, Hook. 
— Notophoena foliosa*. 
20 . 
spicata, Willd. 
= Scypharia senticosa*. 
21 . 
tetragona, Brongn. 
— Scypharia ? tetragona *. 
22 . 
tetrandra, Clos. 
■=Trevoa Closiana*. 
23. 
tomentosa, Phil. 
— Notophoena tomentosa*. 
24. - 
Tralhuen, Bert. 
— Talguenea costata*. 
25. 
Trebu, Bert. 
= Trevoa 3-nervis*. 
2. NoTOPHiENA. 
I propose this genus for a separate group, with flowers di- 
stinguished by the same peculiarity as those of Colletia — the 
total absence of petals, — but differing from the latter genus in 
its habit, its copious foliage, and in the form of its disk, which 
resembles that of Discaria. It is also characterized by the 
peculiar feature before alluded to — the union of the base of the 
opposite stipules, which gives an appearance of an articulation 
at every node, — a peculiarity often seen also in the middle of 
the spines when they are foliiferous. The type of the genus is 
the Colletia serratifolia of Ventenat, from Chile ; the other species 
t This species is shown in Plate 36 e. 
