FLOHA OF SOUTH AMEHICA AND THE I'ACIllC. 43 



B. criftpa, Spr. B. trimera. Less, and B. ajUnrlrka, Less, (all 

 from Rio Grande) should be united wiih B. arficulata. 



1102. (59.) B. sagittalis. DC. v. p. 425. Molina, Less 



Chili. Chamisso. Plains near the Andes, province of Valdi- 

 via. Bridges. (?i. 580) Chiloe (n. 57) and CoquimlK) (/i. 83.) 

 Cuming. Mendoza, Gillies (n. 182.) Parana, Ticeedie. 



1103. (60.) B. phijteumoides. DC. Prodr.\.p.A25. Molina, 

 Less. — S. Brazil. Sello. Banda Orientale, Rio Parana anil 

 Uraguay and Buenos Ayres. Tweedie. — In our plants tlie 

 leaves are from 2 to 4 inches long, triplenerved, and penni- 

 nerved. The glomerules of capitula form dense spikes. 



1 104. (61.) Heterothalamus brunioides (Schlecht. in Linncea 

 V. 6. p. 504); foliis linearibus integerrimis. DC. Prodr, v. 



p. 216. — Melananthera aliena. Spr Sterea Romerilla. Don, 



mst. — Mountains west of Monte Video. (Tweedie). Aguadita 

 and El Cerro del Morro, province of San Luis. Dr. Gillies. 

 (n. 163.) 



1105. (62.) H. spartioides (Hook, et Arn.) ; ramosissimus 

 aphy]lus,rachidis bracteolis caducis,floribus foemineis ligulatis. 

 — Baccharis ligularis. Don, mst. — Los Loamos in N. Patago- 

 nia. Tweedie. Valley of L^spallata and from Mendoza to 

 RioDesaguadero. Gillies (n.\SS.) Coquimbo, Chili. Cuming. 

 (w. 884). — lIi\b\to( Baccharis genistifolia, but it has no leaves, 

 and the flowers are decidedly bracteolated. No doubt, also, 

 it greatly resembles B. aphylla of DC. Prodr. v. p. 424, for 

 De Candolle has referred to it, though doubtfully, Mr Cum- 

 ing's Chilian specimen. Even in a dried state, on bruising 

 the flowers, they yield a most powerful balsamic smell, and 

 Tweedie observes, "I was led to discover this plant from a con- 

 siderable distance, by its very strong odour. It grows in small 

 dense tufts, and when the wind blows the scent is perceived 

 far and wide. It is called Escoba, and is the only article 

 employed for making brooms." 



1106. (63.) H. trinervis (Hook, et Arn.); ramulorum 

 foliis oppositis petiolatis ovato-lanceolatis integerrimis tri- 

 nerviis supra nitidis, panicula terminali pyramidata, rachidis 

 bracteolis caducis, flosc. fcem. filiformibus (baud ligulatis !) 



