﻿396 ON THE BOTANY OF JAPAN. 



Thunberg's Carduus acaulis was not met with in Japan, but a species probably the 

 same was collected in various islands of the Loo Choo group.* 



Among the Cichoraceee is a new, small-flowered Lampsana, with the involucre only 

 about two lines long in anthesis, and little longer in frui*.-}" 



Youngia Japonica, DC. (Prenanthes Japonica, Linn., Thunb.) doubtless includes 

 Y. Thunhergiana, multiflora, runcinata, and probably all of the eight species known to 

 De CandoUe except F. Maiiritiana (which I have not seen) and the ambiguous 

 Y. napifolia. The pubescent tube of the corolla, the uniserial pappus, and the habit, 

 may keep the genus distinct from Crepis. Under the name of Youngia integra, I refer 

 to the genus — notwithstanding a somewhat different aspect — a plant gathered at 

 Tanegasima, off the south end of Kiu-siu, and abundantly in Ousima and the Loo 

 Choo Islands, which is doubtless Thunberg's Prenanthes integra, therefore De Candolle's 

 F. lanceolata, but whether Houttuyn's Prenanthes lanceolata is doubtful. That specific 

 name, certainly, is not a good one for our plant. The rest of the Japanese species ap- 

 pended by De Candolle to Youngia, with a mark of doubt, I can now confidently 

 refer, along with some neAv ones, to Cassini's genus Ixeris. I would add Don's Chorisma 

 (Chorisis, DC.) to the number; remarking that Don had no good reason for describ- 

 ing the blossoms of Chorisis repens as "pale blue," and De Candolle still less for 

 dropping the qualifying adjective. Linnaeus in the original account called them 

 yellow, and so they are. It is singular that a plant which inhabits these shores, from 

 Loo Choo and Hong Kong to Kamtschatka, should have so long escaped rediscovery. 

 I append the characters of the Japanese species before me, and of a doubtful one 

 from the Bonin Islands. :{: 



* CiRSiCM BREVICAULE (sp. nov.) : foliis profiinde pinnatifidis dentatis spinosis et spinuloso-ciliafis ufrinque 

 glabris (costa subtus primum arachiioidea), radicalibus caule araclinoideo plerumque longioribus, cauliuis semi- 

 amplexicaulibus baud decurrentibus oblongis ; capitulis 2-5 subcoiymbosis breve pedunculatis ; involucro 

 pi. m. folioso bracteato bemisphasrico glabro, squamis lanceolatis acuminatis erectis, exterioribus ovato- 

 lanceolatis spinula terminatis. Carduus acaulis, Tlmnh. ? Cirsium Japonicum, Hooh & Am. ? Loo Choo 

 Islands, etc. 



t Lampsana paryiflora (sp. nov.) : glabra vel glabriuscula ; caulibus e radice annua debilibus diffusis ; 

 foliis fere omnibus lyrato-pinnatifidis ; capitulis laxe paniculatis parvis 14-20-floris; involucri squamis fructi- 

 feris planis ecarinatis acuminatis ; acbeniis breviter oblongis subcompressis, marginibus acutis liispidulo-scabris. 

 Simoda, Hakodadi. 



X Ixeris stolonifera (sp. nov.) : pumila, subglauca ; stolonibus filiformibus prorepentibus foliatis ; foliis 

 orbiculatis late ovalibusve basi obtusis vel subcordatis plerumque integerrimis petioli filiformi brevioribus ; 

 pedunculis elongatis scapisve monocephalis nudis ; involucro 15 - 20-Horo ; acbeniis ovali-oblongis rostro suo 

 brevioribus, costis crassis loevibus. — Vai-iat, foliis 2 -12 lin. longis nunc parce denticulatis, nunc basi sub- 



