ASCLEPIADACEAE. — DREGEA 353 



m., May 24, 1908 (No. 2245; climber 1.25-1.50 m. tall). Yunnan: 

 between Yung-peh-ting and Tai-nao-ko, climbing on shrubs and 

 creeping on the ground, alt. about 2400 m., July 3, 1914, C. Schneider 

 (No. 1730; flowers white with violet markings, semiscandent shrub up 

 to 2 m.). 



The plant collected by me in Yunnan (No. 1730) is very similar to Wilson's No. 

 2245, both having small leaves from 2.5 to 3.5 cm. in length and 2 to 3.5 cm. in width, 

 but there is scarcely any other diiTerence on which a variety could be based. Pos- 

 sibly, however, the fruits are somewhat different. The ripe foUicles before me of 

 Wilson's No. 282* are up to 7 cm. long and 1.8 cm. broad at the base and are long- 

 acuminate at the apex. The seeds are about 11 mm. long and bear a coma of about 

 the same length (12-13 mm.). The shape of the calyx-lobes, the amount of the pu- 

 bescence on the leaves and inflorescence and other details seem to be rather variable. 



I also collected specimens in southern Szech'uan in the district of Kuapie, of 

 which I have only a small flowering piece before me which is very similar to the fol- 

 lowing species, but as far as I can see from my notes the color of the flowers is the 

 same as that given for No. 1730. 



Dregea corrugata Schneider, n. sp. 



Dregea siiiensis Schlechter & Diels in Bot. Jahrb. XXIX. 544 (pro parte, non 

 Hemsley) (1900). 



Frutex scandens, ad 3 m. altus; ramuli vetustiores glauco-cinerei, 

 valde rimosi, subvillosi, hornotini dense v. laxius tomentosd-villosi. 

 Folia membranacea v. adulta crassiuscula, late ovata v. ovato-oblonga, 

 basi pleraque profunde cordata, rarius tantum subcordata, apice 

 sensim acuta v. subacuminata, 5-9.5 cm. longa et 2.8-5.5 cm. lata, 

 margine Integra, supra intense viridia, sparse (in costa distinctius) villo- 

 sula, subtus albo-(v. flavo-)villoso-tomentosa, mollia, in nervis later- 

 alibus utrinsecus 4-5 conspicuis minus quam in facie pilosis; petioli 

 villoso-tomentosi, 1.5-4 cm. longi. Inflorescentiae axillares, umbel- 

 lato-cymosae, pedunculis breviter-villosulis ad 6 cm. longis sujffultae, 

 8-15 florae; pedicelli 2.3-2.7 cm. longi, filiformes, villosuli, basi bracteis 

 parvis linearibus villosulis praediti; flores flavescentes (an lilacino- 

 maculati?), pro genere typici, aperti ad 1.2-1.5 cm. diametientes; caly- 

 cis segmenta oblonga, plus minusve acuta, 3-4 mm. longa, extus medio 

 villosula versus margines glabrescentia sed margine ipso ciliata, intus 

 glabra, basi inter segmenta squamulis minimis 5 (v. interdum pluri- 

 bus?) instructa; corollae lobi ovati, obtusi, glabri sed margine satis dense 

 ciliati, circiter 5-6 mm. longi et basi subaequilati; corona pro genere 

 typica, lobis ut videtur ovoideis inflato-saccatis apice distincte apicu- 

 latis; pollinia oblonga, leviter curvata, pendula, quam retinaculum 

 anguste oblongum circiter duplo longiora, translatoribus satis distinctis 



