SOUTH AMERICAN PLANTS. 67 
Triguiera of Cav. which may probably belong to this 
tribe. 
The evidence given above, in regard to the carpological 
character of Grabowskya, taken into consideration with what 
I have advanced on a former occasion respecting Nolanacee 
(p. 47), renders it clear that this genus cannot appertain 
either to Borraginee, or to Nolanee, although it is to this 
order that it bears the greatest affinity, its position being 
manifestly between them; with the tribe Borragee it agrees 
in the gynobasic origin of its ovaria, and in having a fruit 
with 2 bilocular nuts, and in the adhesion of the style to 
the axis of the adnate ovaria, but the form and position of 
the embryo in copious albumen, independent of its glabrous 
and totally different habit, forbids any positive connexion 
with it. On the other hand, the difference between it and 
Nolanee is not great: it agrees with them in the form and 
position of the embryo enveloped in albumen, in its 2-locular 
nuts, which that tribe often possesses, but it differs in the 
small and regular number of its ovaria, which in Nolanee 
are constantly more numerous, always distinct, and never con- 
fluent with the style as in Grabowskya; the estivation of 
the corolla is also deeply plicate in the one, and imbricate 
in the other; it agrees, however, as before shown, both 
with some genera of Borragee, and all Nolanacee, in having 
the cells of its nuts perforated at base, through which a stro- 
phiole subtends that connects the testa immediately with the 
gynobasie disc that supports the ovaria. Upon the whole it 
appears to offer the closest alliance to Nolanacee, which order 
I therefore propose dividing into 2 distinct subtribes, viz :— 
NoLANACE, 
1. Grabowskyee. Corolla estivatione imbricata. Ovaria 2, 
biloculares, stylo unico centrali adnata. Nuces 2, bilo- 
culares, loculis 1-spermis, imo perforatis. Semen basi 
strophiolo instructum. Embryo albumine amplo filiformis, 
annulari-arcuatus. 
2, Nolanee. Corolla estivatione contortu-plicata. Ovaria 
K 2 
