CHILE AND ITS ADJACENT REGIONS. 103 
rally ascending raphe the whole length of the seed, and terminating in a small apical 
chalaza; the seed is therefore quite anatropous ; the nuts are placed laterally in regard 
tothe axis. "This will be seen to be the structure of Dipyrena, with the essential differ- 
ence that its nucules are 1-locular. The Verbena scoparia, Hook. & Gill., figured in the 
Bot. Misc. pl. 47, belongs to this group. Schauer, in his Monograph of the family, places 
D. juncea in Lippia, and D. scoparia in Verbena, stating erroneously that its fruit is a 
4-coccous capsule. From Verbena it is manifestly distinct, and it differs from Lippia in 
its pecular habit, its inflorescence, and in its corolla with a 5-lobed (not 4-lobed) border, 
and other particulars. Walpers, in his arrangement of the genus Verbena, places the 
species of this group in a separate division, Juncee, in which he includes 7: Ephedrioides, 
V. alata, and V. sagittata of Chamisso; but these belong to Verbena, having a fruit of 
four nucules; he also includes Y. glauca and Y. aphylla, Hook. € Gill., which do not 
possess the features of Diostea, their fruit being that of Verbena. The latter species 
appears to differ from Y. intermedia, Hook. & Gill., in little else besides the abortion of 
its leaves, the last-mentioned plant being an intermediate form between 7. aphylla and 
V. Bonariensis. The generic name of Diostea, after the example of Dipyrena, is derived 
from sic (duplex), ooréa (ossa, nuculæ). 
DrosTEA, nob. Calyx tubulosus, inæqualiter subulato-5-dentatus, persistens. Corolla 
tubulosa, tubo calyce 2-plo longiore, subeurvato, limbo subobliquo, 5-lobo, lobis 
ovatis vel oblongis, sepe subemarginatis, expansis. Stamina 4, didynama, sæpe 
cum quinto sterili multo breviore inter par posterius sito, inclusa; filamenta sub- 
brevia, filiformia, 2 superiora anteriora paulo supra, 2 inferiora posteriora paulo 
breviora sub medium tubi inserta, glabra, tubo intus antice pilis longis albis 
retrorsus hirsuto. Stylus inclusus, filiformis, compressus, apice gradatim dilatatus, 
suboblique truncatus, latere superiore inferioreve uncinato-recurvus; stigma globo- 
sum, papillosum. Ovarium oblongum, disco pulviniformi insitum, maturitate 2-lo- 
culare, loculis lateralibus, 1-ovulatis, dissepimento distincte 2-lamellato. Drupa 
ovata, calyce persistente tecta, pericarpio subsicco, nitente, 2-pyrena ; pyrenes plano- 
convexi, fusci, subcornei, duri, leeves, monospermi, facie interiore ad basin et latus 
posticum versus plaga alba ovali placentari notati, et hinc foramine basin loculi 
penetrante perforati: semen loculum implens, erectum, hilo basali sublaterali fora- 
mini nexum, raphe laterali, hine adscendente, chalazam apicalem attingente ; 
embryo exalbuminosus, cotyledonibus crasse carnosis, facie interna pyrenibus paral. 
lelis, radicula infera conica 3-plo longioribus. dern 
Suffrutices humiles Andium Chilensium ; rami e basi plurimi, virgati, ramosi ramis oppo- 
sitis vel 4-natim verticillatis iterumque ramulosis, ramulis erecte Wiecendóniione, 
teretibus, sæpius fistulosis et sicco nigrescentibus, axillis remotis, vetustioribus aphyllis, 
wore Ephedre constrictis ; folia opposita, parva, linearia, integra " sessilia, vel dente 
dentata et breviter petiolata ; inflorescentia terminalis, sublaxe spicata ; flores sessiles 
aut brevissime pedicellati, bractea parva suffulti. 
1. Diosrea JUNCEA, nob.: Verbena juncea, Hook. et Gill. Bot. Misc. i. 162: Lippia 
VOL. XXVII. r 
