H. Léveillé: Decades plantarum novarum. XX/XXI, 197 
41. Samolus pyrolifolius Greene, nov. spec. 
Glaberrimus. Perennis, radicibus numerosis, elongatis, tenuiter 
fibrosis, albis; caules pauci, erecti, 1—3 dm alti, graciles, plus minus 
ramosi, ex ima basi usque ad inflorescentiam crebre foliosi: folia in- 
tense viridia, membranacea, siccitate translucentia et venulas transversas 
Pyrolae instar exhibentia, omnia late ovalia aut suborbicularia, basilaria 
in petiolum. brevem alatum abrupte contracta, apice lato aut obtusissima 
aut subtruncata aut retusa, caulina ampla, basilaribus vix duplo minora, 
plerumque obtusa, interdum acutiuscula, subsessilia: racemi breves laxi, 
pedicelli 2 cm longi, filiformes patuli, paullo supra medium minute 
bracteolati; calycis fere hemispherici dentes brevissimi, multo latiores 
quam longiores, acuti, tubo hemispherico plus quam duplo breviores; 
corolla alba, minuta. 
This fine species is known to me only as collected near Knoxville, 
Tennessee, in June, 1898, by Albert Ruth. It was distributed by him 
to several herbaria under no. 486. The specimen in my set is more 
than a foot high, with basal haves as large as, and much like, those 
of some Pyrola, even the venation being conspicuous; this partly because 
the foliage is of so thin a texture; a character of importance in this 
genus, though I know not what authors hae given it any attention. 
LI. Decades plantarum novarum. XX. XXI. 
Auctore H. Léveillé. 
(Originaldiagnosen.) 
191. Spiraea ouensanensis Lévl. nov. spec. 
Affinis S. pubescenti Turez. a qua differt 1° foliis supra glabris, subtus 
pallidioribus praeter nervos vix pilosis; 2? inflorescentia perfectissime um- 
bellata, umbellae ramis 20— 24. 
Corea: In montibus Ouen-San, jul. 1906 (Faurie, 315). 
192. Crataegus coreanus Lévl, nov. spec. 
Affinis C. pinnatifidae Bunge, a qua differt notis sequentibus: 1? planta 
glaberrima etiam in foliis et inermis; 2? stipulae conspicue plicato-falcatae 
remote denticulatae, quasi lunatae; 3? fructus aurantiaci, magni (mole 
magni pisi), apice profunde excavati; calice persistente; 4? petioli con- 
spicue canaliculati. 
Corea: Circa Seoul et Chinnampo, jun.-sept. 1906 (Faurie, 307, 308). 
193. Prunus Taqueti Lévl. et Vant., nov. spec. 
Dumosa et spinosa, 1 m alta; rami contorti, rubescentes, glabri; folia 
parva rotunda, vix apice acuminata, crenata, petiolo dense et breviter 
villoso; fructibus nigris, globosis pedunculo minoribus, :xillaribus, soli- 
tariis. 
Corea: Hallaisan, jul. 1907 (Faurie, 1890); Quelpaert, Hallaisan, 
sept. 1907 (Taquet, 104). 
Habitu P. spinosam L. in memoriam revocat. 
