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112 DIAGNOSES SPECIERUM NOVARUM. 
In the neighbourhood of Tengyueh, Yunnan, 1912. Howell. 
No. 334. 
Microstylis acutangula, Hook. f., from the Malay Peninsula, 
appears to be the nearest akin to the above species (see Hook. 
Ic. Plant. tab. 1835); the structure of the flower is very 
similar, though there are differences in the colour and in the 
labellum. The specific name refers to the orbicular outline of 
the labellum and its auricles. 
Onosma album, W. W. Sm. et J. F. Jeff. Sp. nov. 
Species affinis O. exserto, Hemsl.; habitu minore, foliis 
linearibus, calyce aliter setoso, corolla alba inter alia signa 
recedit. 
Planta 60 cm. alta erecta. Caulis ut videtur solitarius e 
radice crassa ortus, infra inflorescentiam simplex sat foliosus 
setis longiusculis patentibus basi tuberculatis atque setulis 
albidis densissime vestitus. Folia basalia, ut caulina, linearia, 
8-10 cm. longa, 7-8 mm. lata, acuta, basi paulo attenuata, 
Sessilia, crassiuscula, supra viridia dense setosa atque setosula 
infra incana densissime setosula_ setis longiusculis paucis 
intermixtis ; costa supra immersa infra eminens  setosa. 
Inflorescentia terminalis ad 30 cm. longa e cymis scorpioideis 
paucifloris racemose dispositis composita; bracteae primariae 
2-4 cm. longae ovato-lanceolatae ceterum foliis similes, supra 
sensim magnitudine decrescentes ; bracteae secundariae multo 
minores ; pedunculi graciles patentes sub anthesin + 6 cm. 
longi, circ. 5-flori, cum pedicellis 1-2 cm. longis dense setosi 
atque setosuli. Calyx circ. 1.3 cm. longus ad basim in lobos 
quinque lineares partitus dense strigoso-setosus. Corolla calyce 
paululo longior, circ. 1.4 cm. longa, tubulosa supra paulo 
ampliata, ore + 5 mm. lata, extus dense setosulo-incana, alba, 
lobis circ. 2 mm. longis triangularibus erectis vel apice breviter 
revolutis. Stamina ad -- 5 mm. exserta filamentis glabris, 
antheris cohaerentibus + 1 cm. longis. Stylus circ. 2 cm. 
longus filiformis erga basim sparse pilosulus. Fructus deest. 
“Plant of 2 ft. Flowers pure white. Open, dry, stony 
pasture on the Yung-pi Mountains, Yunnan. Lat. 26° 45 N. 
Alt. 10,000 ft. Sept. 1913.”’ G. Forrest. No. 11,188. 
Onosma cingulatum, W. W. Sm. et J. F. Jeff. Sp. nov. 
Species affinis O. Forrestii, W. W. Sm. speciei haud bene 
cognitae ; foliorum forma atque indumento, corolla intus 
glabra annulo capillorum alborum basilari excepto inter alia 
divergit. 
Planta usque ad 1.5 m. alta erecta. Caulis robustus setis 
