170 Mr D. Don on the Affinities ofDeutzia, Viviania, Sfc. 



stamina 10 ; alterna petalis opposita, breviora : Jilamenta linearia, complanata, 

 apice cuneato-tridentata ! dentilris lateralibus obtusLs, obliquis ; inlermedio 

 subulato, longiore, antherifero : anthera subrotuudse, biloculares, loculis tu- 

 midis, longitudinaliter dehiscentibus. Ovarium tubo calycis adherens, hinc 

 inferum. Styli 4, longi complanati, glabri. Stigmata capitata, pruinosa. 

 Capsula subrotunda, lignosa, 4-locularis, polysperma, apice quadriiariam de- 

 biscens : loculis stylu verticalibus. Placenta 4, axi insertfe, sublimatte. Se- 

 mina nondum vidi. 



Arbuscula (Japonica) erecta, ramosissima. Rami teretes, corlice spadiceo, dein 

 decifluo induti. Folia opposita, petiolala, ovata, acuminata, serrata {serraturis 

 setaceis) memhranacea, nervosa, ulrinque, sed praserlim xublus, ramulisque pube 

 nl^llata vestita, basi rotundata, sesquipollicaria : nervis alternis, oblique iransversii\ 

 Petioli tereliusculi, lineam longi. llacemus terminalis, mulliflorus. Pedicelli 

 brenissimi, opposili, 1 v. 2-flori, pilosi. Calyx et corolla alba, pube stellata, sicci- 

 latcfulvescenie, copiose vettita. 



1. Deutzia scauha, Thunb. Diss. A'od. Gen. 1. p. 20. t. 1. Fl. Jap. p. 185, 

 t. 24. mild. Sp. PI. 2. p. 730. 



Hub. in moiitosis projie Nangasacki Japonensiiim. T7 {v. s. sp. in Herb. 

 I.amb.) 



An examination of several specimens of this interesting, but 

 hitherto obscure genus, has enabled me to determine its place 

 in the natural system. Although I have not had an opportu- 

 nity of examining the seeds, its affinity to Philadelphus is clear- 

 ly established, from which it is principally distinguished by the 

 reduced number of its stamina, and by the structure of its fila- 

 ments. The pubescence in all the species of Philadelphus., which 

 I have had an opportunity of inspecting, is uniformly simple ; 

 but in Decumaria it is starry ; and the capsule of this genus 

 is four-celled, and the styles and stigmata are united into one 

 body. 



VIVIANIA, Cavan. 

 MACRjEA, Lindl. 

 Sysl. Linn. DECANDRIA TRIGYNIA. 

 Ord. Nat. CARYOPHYLI.E^, Juss. Prope Mollugineni. 

 The genus Viviania was first proposed by Cavanilles in the 

 " Anales de Ciencias Naturales, tom. vii. p. 211. t. 49.," pub- 

 lished at Madrid m 1804; and it is rather singular that no sub- 

 sequent author has taken any notice of it. Its intimate affinity 

 to Molbigo proves it to be a legitimate member of the Caryo- 

 phyUeOB. It is chiefly distinguished from Mollugo, by the pre- 

 sence of petals, and the greater confluence of the styles and di- 



1 



