36 JOURNAL OF THE ARNOLD ARBORETUM [vol hi 



Briquet, £tudes Cytisus Alp. Marit. 174 (1894). — C. supinus subsp. C. 



albns 6 microphyllus Ascherson & Graebner, Syn. Mitteleur. Fl. vi. 2, 329 

 (1907). 



This a small prostrate form with smaller leaves and white flowers of 

 C. albus known from Transylvania and Thessaly. Its oldest varietal 

 name is " microphyllus ," but Briquet when making it a variety of C. 

 supinus had to change it on account of the older homonym C. supinus 

 Y microphyllus Wimmer & Grabowski, Fl. Siles. n. 2, 50 (1829). The 

 name "microphyllus" can stand only if considered a varietal name, as 

 C. microphyllus Boiss. is antedated by C. microphyllus Link of 1826 and 

 therefore is not valid. Ascherson and Graebner call C. albus a subspecies 

 of C. supinus but cite it as a binomial which is against the International 

 Rules. As C. albus Hacquet of 1790 has priority of C. albus Link of 

 1822 based on Genista alba Lamarck of 1786, the combination C. multi- 

 florus Sweet, must be used for the latter species, based on the next oldest 

 name Spartium multiflorum Aiton of 1789. 



Cytisus albus var. pallidus, comb. nov. — Cytisus leucanthus var. 

 pallidus Schrader apud De Candolle, Prodr. n. 155 (1825). — C. banaticus 



Wieg 



C. austriacus 



var. pallidus Neilreich, Aufzaehl. Ung. Slavon. Pfl. 330 (1866).— C. 

 pallidus Kerner, Abhang. Pflanzengest. 6 (in Festschr. Versamml. 43. 

 Deutsch. Naturf. Aerzte) (1869), non Poiret. — C. variabilis Blocki in 

 Oester. Bot. Zeitschr. xxxiv. 425 (1884), pro parte. — C. supinus subsp. 2, 

 pallidus y var. pallidus Briquet, Etudes Cytises Alp. Marit. 174 (1894). — 

 C. supinus [subsp.] n. C. pallidus 9 banaticus Ascherson & Graebner, Syn. 

 Mitteleur. Fl. vi. 2, 329 (1907). 



This is a form with pale yellow flowers. If considered a distinct 

 species, it must bear the name C. banaticus Griseb. & Schenk, as C. palli- 

 dus is not a valid name being antedated by C. pallidus Poiret, Enc. M6th. 

 Suppl. ii. 442 (1811). Moreover the combination C. pallidus probably 

 based on C. leucanthus var. pallidus Schrader had been published twice 

 before Kerner used it, though in both cases as a synonym: C. pallidus 

 Steudel, Nomencl. ed. 2, I. 477 (1841), as a synonym of C. leucanthus. 

 C. pallidus Kitaibel apud Nyman, Consp. Fl. Eur. 157 (1878), as a syn- 

 onym of C. capital us. 



Wistaria formosa (TV. floribunda f. alba X sinensis), hybr. nov. 



Twining shrub; young branchlets silky-pubescent; leaves 9-13-folio- 

 late, rarely 7- or 15-foliolate; leaflets oblong, 5-7.5 cm. long and 2 3 cm. 

 broad, acuminate, broadly cuneate at base, entire or occasionally spar- 

 ingly and minutely denticulate, silky-pubescent at first on both sides, 

 at maturity bright green above and glabrous, lighter green and lustrous 

 beneath with scattered appressed hairs, the midrib toward the base like 

 the petiolule minutely pubescent; petiole and rachis silky-pubescent at 

 first, becoming glabrous. Racemes including the short peduncle about 



