228 NORTH AMERICAN FLORA [Volume 24 



Robinia Pseudo-Acacia X viscosa. This appears in two forms: — 



1. Robinia dubia Foucauld, Jour, de Bot. Desv. II. 2: 204. 1813. Robinia ambigua Poir. in Lam. 



Kncyc. Suppl. 4: 690. 1816. Robinia intermedia Soulange, Ann. Soc. Hort. Paris 2: 42. 1828. 

 This form resembles most R. Pseudo-Acacia, but differs in the slightly viscid and less prickly 

 branches, the 15-21 leaflets and light-pink flowers. 



2. Robinia bella-rosea Nichols.; Sargent, Silva 3: 46. 1S92. Robinia amoena C. Koch, Dendr. 1: 



60. 1869. Robinia viscosa bella-rosea Voss; Vilrnorin. lilumenz, ed. 3, 219. 1896. Robinia 

 Pseudo-Acaciabella-roseaCowcW, Cycl. Am. Hort. 153S. 1902. Robinia dubia bella-roseaJi-ehder, 

 Mitt. Dents. Dendr. Ges.24: 223. 1915. This resembles more R. viscosa, being more viscid and 

 with deeper rose-colored flowers. 



20. Robinia Hartwigii Koehne, Mitt. Deuts. Dendr. Ges. 

 22: 1. 1913. 



Robinia viscosa Hartwigii [" Hardwegii"] Ashe, Jour. Elisha Mitchell Soc. 16: 175. 1922. 



A shrub, about 3 m. high; branches densely puberulent as well as glandular with mostly 

 short-stalked glands; stipules subulate-setaceous, rarely becoming spiny; leaves 1-1.5 dm. 

 long; rachis densely villous-puberulent and with scattered glands; leaflets 13-23, elliptic to 

 lanceolate, mucronate, 2-3.5 cm. long, 1-2 cm. wide, villous on both sides or glabrate above, 

 densely villous beneath, dark above, pale beneath; racemes dense, 5-10 cm. long; peduncle and 

 pedicels densely puberulent and glandular; calyx villous-puberulent, 4 mm. long, the lobes 

 deltoid, acute, 4 mm. long; corolla rose-colored, 18 mm. long; pod linear, 6-10 cm. long, 12 

 mm. wide, 5-12-seeded, densely glandular-hispid. 



Type locality: Cultivated material. 



Distribution: North Carolina to Alabama and Georgia. 



Doubtful and excluded species 



Robinia violacEa Jacq. Enum. PI. Carib. 28. 1762. This is a species of Lonchocarpus. 

 , Robinia rosea Mill. Gard. Diet. ed. 8. Robinia no. 4. 1768. This is, according to 

 Britten and Baker f.,* Lonchocarpus roseus. 



Robinia glabra Mill. Gard. Diet. ed. 8. Robinia no. 5. 176S. This is, according to 

 Britten and Baker f., Dalbergia campeachiana Benth. 



Robinia alata Mill. Gard. Diet. ed. 8. Robinia no. 6. 1768. This is Piscidia Erythrina 

 L. 



Robinia pyramid ata Mill. Gard. Diet. ed. 8. Robinia no. 7. 1 768. According to Britten 

 and Baker f., this is a species of Caesalpinia. 



Robinia violacEa Mill. Gard. Diet. ed. 8. Robinia no. S. 1768. This is Peltophorum 

 Linnaei Benth. 



Robinia latifolia Mill. Gard. Diet. ed. 8. Robinia no. 9. 1768. According to Britten 

 and Baker f., this is Lonchocarpus violaccus. 



Robinia aculEata Vahl, in West, Bidr. St. Croix 300. 1793. This is a species of Pictctia. 



Robinia sericEa Poir. in Lam. Encyc. 6: 226. 1804. This is Lonchocarpus sericeus. 



Robinia spinifolia Desv. Jour, de Bot. Desv. II. 1: 78. 1814. This is a species of 

 Pictetia. 



Robinia ludoviciana Raf. Fl. Ludov. 164. 1 S 1 7. Insufficiently described, perhaps a 

 spineless form of R. Pseudacacia L. 



Robinia purpurea Link, Enum. Hort. Berol. 2: 242. 1822. Described as having purple 

 flowers, from garden specimens of unknown origin. The Index kewensis gives the habitat as 

 North America, but no American plant agrees with the description. 



Robinia acuminata Schlecht. Linnaea 12: 306. 1838. This was described from Ma- 

 pilques, Mexico, without fruit. Schlechtendal suggests that it may be a Lonchocarpus. 



Robinia SchiEdEana Schlecht. Linnaea 12: 306 1838. Schlechtendal suggests 

 Lonchocarpus. It was collected between Veracruz and Santa Fe. 



Robinia Ashei Schallert, Torreya 23: 105. 1923. Unknown; said to be related to 

 R. longiloba. 



* Jour. Bot. 35: 227. 1897. 



