swingle: severinia buxifolia 655 



The fruit characters are so different that the plant cannot be 

 considered to be a congener of Atalantia and must be considered 

 to be a distinct genus, for which the oldest available name is 

 Severinia of Tenore. The oldest name for this plant becomes, 

 therefore, Severinia buxifolia, with the following synonyms: 



Severinia buxifolia (Poir.) Tenore,. Ind. Sem. Hort. Bot. Neapol., 1840, 

 p. 3 (?) [not seen]; Atti della terza riunione degli scienzati ital., 

 501-3. 1841. 



(?) Buxoides aculeata Osb. Dagbok Ostindisk Resa, p. 242. 1757 

 [nom. subnud.]. 



Limonia monophylla Lour. FL Cochin. 1: 271. 1790. [err. det.] 



Citrus buxifolia Poir. in Lam. Encycl. 4: 580. 1798. (?) 



Limonia bilocularis R. Hort. Bengal. 32. 1814. [nom. nud.] 



(?) Limonia retusa Don. Prod. Fl. Nepal. 224. 1825. 



(?) Limonia microphylla Voigt, Syll. PL Ratisb. 53. 1828. 



Citrus emarginata Desf. Cat. Hort. Paris, ed. 3, 235, 406. 1829. 



Atalantia? bilocularis Wall. Cat. no. 6356. 1831. [nom. nud.] 



Limonia bilocularis Roxb. Fl. Indica, 2:377. 1832. 



Sclerostylis atalantioid.es Wight & Arn. Prodr. 1: 93. 1834. 



Atalantia Loureiriana Roem. Syn. Hesperid. 37. 1846. 



Helie atalantioides Roem. Syn. Hesperid. 42. 1846. 



Sclerostylis buxifolia Benth. in Hook. Journ. Bot. 3: 326. 1851. 



Atalantia buxifolia Oliv. Proc. Linn. Soc. 5, Suppl. 2:26. 1861 (ex 

 Benth. Fl. Hongkong. 51. 1861). 



Illustrations: Seeman, Bot. Voy. Herald, pi. 81, 1852-7; Penzig, 

 O., Studi bot. sugli agrumi, Atlas, pi. 11, figs. 6-17, pi. 12, figs. 1-21, 

 1887. 



Type Locality: "Cette plante est originaire de la chine, & y a ete 

 observe par Sonnerat" [in the vicinitv of Canton, China]. 



Distribution: Southern China (Hongkong, Kwangtung, Hainan), 

 Tonkin, Annam, Formosa. 



The writer examined in 1911 the type specimen in Lamarck's her- 

 barium in the Museum d'histoire Naturelle at Paris. It consists of a 

 single leafy twig about 20 cm. long with three short branches. The 

 branch still bears a few flower buds. There can be no possible doubt 

 of its being the plant common in southern China. The original label 

 in Lamarck's handwriting reads: "Citrus — de la chine." A later label 

 in Poiret's handwriting reads: "Citrus buxifolia, Diet. No. — ." 



In the Kew herbarium is a flowering branch of Severinia buxifolia 

 collected by Tenore in the botanic garden at Naples and probably a 

 merotype of the plant upon which the genus Severinia was based. This 

 specimen is undoubtedly congeneric and doubtless conspecific with the 

 type specimen of Citrus buxifolia Poir. 



