236 Mr D. Don on the Characters and Afflnities 



* • Foliis margine dentatO'spitiosis. 



5. C. omaia, foliis elongato-lanceolatis acutis spinoso-dentatis, petiolis un- 

 guicularibus, racemis uendulis, baccis subdispermis. 



Theophrasta longifolia, Jacq. Coll. iv. p. 136. Hort. SchcenB. i. t. 116. 

 Spreng. Syst. i. p. 670. 



Hab. ad Caracas. Jacquin, D. Faning. T7. (V. s. sp. in Herb. Lamb.) 

 Caulis simplicissimus, 12.pedalis. Folia sesquipedalia, basi acuta. Ra- 

 oemi S-9-pollicares. Flores aurantiaci. Bacca magnitudine Cerasi mi. 

 norisy subglobosa, Crustacea, lateribus parum compressa, unilocula- 

 ris, evalvis, plerumque disperma, raro mono v. trisperma, basi calyce 

 et apice stylo persistentibus instructa : crusta intus virens, nervis 

 venisque plurimis peragrata. Semina peltata, connata, substantia 

 pulposa copiosa tecta, subinde drupacea ! aqua tepida madida pulpa 

 exiit voluminosa, basi chalaza ampla concaviuscul^ orbiculata no. 

 tata : testa cartilaginea ; albumen magnum, corneum, pellicula mem- 

 branacea arct^ adhaerenti vestitum. Embryo erectus, axilis, lacteus : 

 cotyledcmes ovales, subfoliaceae : radicula cylindracea, obtusa, cotyle- 

 donibus subaequalis. 



6. C. undttlata^ foliis cuneato-lanceolatis acuminatis spinoso-dentatis, petio- 

 lis semipollicaribus. 



Clavija sp. nova, Herb. Ruiz et Pavon. 

 Hab. in Guayaquil^. Joannes Tafalla. P7. (V. s. sp. in Herb. Lamb.) 

 Folia vix pedalia, spathulato-oblonga, acuminata, basi acuta, margine 

 sinuato-dentata, undulata : dentibus spinosis: Petioli semunciales. 

 Flores nondiim vidi. 



RAUVOLFIA— Z'/. Peruv. 



With the professed object of giving an amended character of 

 Rauvolfia, Ruiz and Pavon have described and figured a genus 

 of plants possessing no affinity whatever with that of Linnaeus. 

 It is difficult to account for the reasons which led them to com- 

 mit so grave an error, as the habit and characters of the two 

 genera are so widely different. A careful examination of au- 

 thentic specimens, both in flower and fruit, of the species de- 

 scribed and figured in the Flora Peruviana, has satisfied me 

 that they are referable to the Verbenacea, and that they are not 

 generically distinct from Citharexylum, a genus which appears 

 to have been destined to be confounded with Rauvolfia, for 

 Willdenow, as we find from M. Eunth, in the Nova Genera et 

 Species Plantarum, had referred certain species of the former 

 to the latter genus. All the species of Citharexylum agree in 

 having the limb and throat of the corolla thickly bearded, and 

 the leaves simple, with their footstalks thickened and articulated 

 at the base to the stem, indicating thereby another close analogy 

 to the Jasminea,^ forming part of the same natural class, which 

 likewise comprises Selaginea, Oleina, and ColumelUacea. 



