160 



* Corolla quadrifida. 



1. Vevhensi gratissimai {Gill, et Hook.); foliis oblongo-ovatis 



breve petiolatis coriaceis integerrimis subtridentatisve, 

 floribus verticillato-spicatis, spicis lateralibus, calycibus 

 hispidissimis. 



Hab. In montosis prope Mendozam, ubi " Cedron" incol- 

 arum, locis arenosis saxosis : alt. 3000 ad 3500 ped. 



Frutex 8-10 pedalis, ramis strictis, gracilibus. Folia opposita, 

 vix unciam longa, petiolo brevissimo insidentia, coriacea; 

 juniora minute scabra; adidta glabra, subtus pallidiora, 

 punctis glanduliferis numerosissimis fragrantibus ad- 

 spersa. Corolla parva, semper quadrifida. Calyx pilis 

 patentibus hispidissimus. 



A very distinct species, yet in habit allied to the well 

 known Aloysia citriodora, {Verbena triphylla, Li fin.); and, 

 like that, yielding a most grateful odour. The Aloysia has, 

 however, only two seeds to each flower, whilst our plant has 

 four, and the flowers themselves are similar in structure to 

 those of Verbena officinalis. The calyx firmly envelopes the 

 fruit, and not unfrequently separates naturally into four 

 pieces or segments, each very concave and bearing an oblong 

 smooth nut. 



2. Verbena officinalis ; caule erecto subhispido, foliis lanceo- 

 latis inciso-serratis trifidisque segmentis incisis scabris, 

 spicis filiformibus subpaniculatis, floribus remotiusculis. 



Verbena officinalis. Linn. Sp. PI. p. 29. Engl. Bot. t. 



767. Fl. Lond. cum Ic. Humb. et Kunth, Nov. Gen. v. 2. 



p. 222. Spreng. Syst. Veget. v. 2. p. 750. 

 /3. foliis grosse serratis vix profunde incisis. 



Hab. X. In Pampas ab urbe Bonaria usque ad Mendozam. 

 /i. Apud Rio Saladillo, ad limites occidentales planitiei 

 Pampas dicta?, et ad margines aquarum in Provinciae 

 Mendoza;. 



Var. /3. differs from the x. and the common European state 

 of the plant, solely in the less deeply cut leaves. 



