Rubiacem.~] MEXICO.— SUPPLEMENT. 427 



truncato germen aequante. Schlecht. in Linncea, 5. p. 172. Hook. Ic. Plant, t. 374. 

 j3. foliis minus acuminatis, floribus brevioribus. 



Hab. /5. Between San Bias and Tepic. — We possess specimens of what we consider the type of this species 

 from Xalapa (the original station of Schiede) gathered by M. Galeotti. The present has less acuminated 

 frequently 5-(as well as 3-) nerved leaves, and shorter flowers. In other respects the two plants appear to 

 be the same. The same species is in Andrieux PI. Mexic. Exsicc. n. 342, from between Chalco and 

 Gonmacatapec. 



Ord. XXIV. RUBIACEiE. Juss. 



1. Bouvardia linearis, H.B.K. Nov. Gen. Am. 3. p. 383. Hartweg, Plant. Mex. n. 106. 

 Benth. PI. Hartweg. n. 106. 



Hab. Between San Bias and Tepic. — This is probably a very general plant throughout Mexico, and we 

 suspect a very sportive one. Kunth remarks that his B. angustifolia and B. hirtella are probably not different 

 from it ; and we are almost of opinion that through the medium of B. splendens, Graham in Bot. Mag. t. 3781, 

 it may be traced even into B. Jacquinii, H.B.K. (the Ixora Americana, Jacq., Houstonia coccinea, Andr.) 



2. B. scabra ,• fruticosa, ramis teretibus pubescenti-pilosis, foliis ternis brevissime 

 petiolatis lato-ovatis acuminatis pubescenti-scabris penninerviis, stipulis e lata basi sub- 

 ulato-setaceis, corymbis terminalibus trichotomis, dentibus calycinis longe subulatis scabris, 

 corolla glaberrima. — B. obovata, Benth. Plant. Harlw. n. 99. an H. B. K. ? Hartw. 

 Plant. Mex. n. 99. 



Hab. Between San Bias and Tepic. — This is the same plant with n. 99. of Mr Hartweg's Mexican 

 collections, and has been considered by Mr Bentham to be the B. obovata of H.B.K. — but that plant is 

 described as having a glabrous, 4-sided, square stem, and "folia quaterna obovato-oblonga, acuminato-mucro- 

 nata, basi angustata, reticulato-venosa, utrinque glabriuscula ;" characters which do not tally with our plant. Our 

 B. scabra, is remarkable for the harsh rigid pubescence which more or less abundantly clothes every part of the 

 plant, and which is particularly copious on the young branches and foliage and on the calyces. Leaves 2-3 

 inches long. The stipules are formed by a broad membrane, uniting the bases of the petioles and bearing a 

 strong subulate or rather setaceous tooth, and one or two lesser and filamentous ones, which are soon 

 deciduous. Corymb many-flowered, terminal, trichotomously divided, at the setting on of the branches 

 bearing 3 small linear-lanceolate leaves and similar stipule3 to those of the stem, but having less rigid teeth 

 or setae. The calyeine teeth are particularly long, subulate and flexuous ; the corolla an inch and a half long, 

 scarlet (?), the tube slender, widening upwards, the limb of 4 broadly ovate spreading segments.* 



* In Mr Andricux's Mexican collections are three plants which seem to be referrible to this genus Bou- 

 vardia, and which may be thus characterized. 



1. Bouvardia Tolucana ; suffruticosa, ramis erectis trichotomis foliisque ternis lineari-lanccolatis sessilibus 

 pubescenti-scabris, stipulis latis membranaceis subbisetigeris, corymbis terminalibus trichotomis, dentibus 

 calycinis brevibus subulatis, corollae pubescentis limbi laciniis late ovatis brevibus suberectis. 



Hab. Toluca. Andrieux, PL Mexic. exsicc. n. 332. Nom. vernac. Trompetillo.—lhe lower part of the 

 stem is shrubby, the rest herbaceous. The leaves are scarcely an inch long, quite sessile. Flowers an inch 

 in length. Corolla clothed with a rather harsh white down, the limb very short. 



