438 MR. SPENCER LE M. MOORE—PHANEROGAMIC BOTANY 
Baillonia. Diostea. 
A A Spiny on falling off of leaves. Not spiny after leaf-fall. 
E RR RI we RENE Long, narrow, coriaceous, fre- | Small and membranous, and 
quently subopposite or alter- strictly opposite. 
nate, more rarely sub-verticil- 
late. 
Inflorescence ........ Racemose. Spicate. 
GUA aaa ca es Relatively short and campanulate, | Comparatively long and tubular, 
with undulate margin. witb distinct lobes, 
Corellá 444... f ... | With a straight, short, broad tube, | With a narrow, elongated, curved 
and a large limb. tube, and small limb. 
Style and stigma ...... Short fleshy style, with a large | Long slender style, with a linear 
capitate stigma. recurved stigma. 
FHHE parrari. Comparatively large entire pyri- | Small 2-lobed fruit completely 
form fruit, surrounded at base enclosed in the persistent calyx ; 
by remains of calyx; mesocarp scarcely any mesocarp, thin endo- 
fleshy, endocarp very long. carp. 
Perhaps the most remarkable point about Baillonia is the curious nature of its spines. 
These seem to be branches which, instead of separating from their mother branch, 
remain attached to it, except for a small projecting flange at the top, upon which flange 
the leaf is borne. After fall of the leaf, the flange remains permanently as a strong, 
sharp, straight spine. Adhesions, possibly of branches to their parent branch, occur in 
some other Verbenacex, e. y. in Diostea itself, in Symphorema, in some species of 
Avicennia, in Premna, Petrea, and Citharexylum; while in Volkameria, and to some 
extent in Citharexylum, spines are left after leaf-fall, as occurs with Baillonia. Although 
placed in different tribes of Verbenacee, one cannot fail to be struck with the evident 
affinity of Baillonia to Citharexylum. The habit, the racemose inflorescence, and the 
flowers of both are very similar; in its 2-seeded fruit alone does Baillonia show any 
marked difference. 
- Bocquillon’s description may be fitly supplemented with the following notes :— 
Caulis in sicco albidus, teres, longitrorsum eximie striatus, circa 0'5 em. diam., spinis 
ramalibus 0:2 cm. long. munitus. Folia usque ad 20:0 em. long. et modo 1:0 em. lat. 
(mediocria 15:0 cm.x0:6 cm.). Racemi circa 15:0 cm. long.; pedicelli 0:2 cm. 
attingentes. Flores albi. Calyx 0:3 em. long. 0:25 cm. lat. Corolle tubus 
... 96 em. long., 0:25 cm. lat.; limbus 0:8 em. diam. 
Eandem plantam legit cl. Balansa in Paraguarià. (N. 2089 in Herb. Kew.) 
