C28 PROCEEDINGS OF THE AMERICAN ACADEMY. 



ca. 5 in racemi apice aggregati. Calyx pilosus aculeatus, sub fructus 

 maturitatem 12-14 mm. longus, aculeis minoribus pilisque atro-oliva- 

 ceis : segmenta gradatim acuta in apices exaculeatos persistentis 2 mm. 

 longos desinentia. Corolla purpurea ca. 7 mm. longa profunde subae- 

 qualiter 5-partita, extus puberula, tubo 1.4 mm, longo. Stamina 4 

 aequalia, fikmentis 1.35 mm. longis, antheris rectis 2.5 mm. longis; 

 quintum rilamento 1.4 mm. longo, anthera arcuata 3 mm. longa. Stylus 

 5 mm. longus curvatus. Bacca globosa calyce obtecta, diametro ca. 



9 mm. ; seminibus nigris lateraliter compressis rugoso-foveatis, 2.5 mm. 

 latis 3 mm. longis. — Mexico : Zacoalco, Valley of Mexico, Bourgeau, 

 no. 542. San Luis Potosi : Parry & Palmer, no. 6344; ; Schaffner, 

 no. 696. Vera Cruz : Mt. Orizaba, Seaton, no. 468. — Thurber, no. 750, 

 from Chihuahua is perhaps a variety of this species. 



S. heterodoxum var. novomexicanum, n. var., a varietate 

 typica differt partibus omnibus densius glanduloso-pubescentibus 

 aculeatisque ; calycis segmentis aetate ad apicem versus abrupte 

 obtusatus, in lacinias angustas exaculeatas terminantibus, aculeis 

 pilisque aureo-brunneis, nee, ut in varietate typica, olivaceis. Corolla 



10 mm. longa, tubo 1.3 mm. longo. Staminum filamenta 2 mm. longa ; 

 antherae 4 rectae 3 mm. longae, quinta arcuata 5 mm. longa. — New 

 Mexico, Fendler, no. 673 (type, in hb. Gray). 



Solanum citrullifolium A. Br. This species does not appear to 

 reach Mexico in its typical form. It is clearly distinct from the Mexi- 

 can & heterodoxum, with which it has long been considered identical. 

 The original description (Ann. Sci. Nat. ser. 3, xii. 356) is entirely 

 adequate. Specimens examined : Fayette, Iowa, 1894, Fink (intro- 

 duced'?); Texas, August, 1848, Lindheimer ; Hort. Freiburg, 1849, 

 A. Braun (cotype, grown from Lindheimer's Texan seed) ; Hort. 

 Cantab., 1849, Gray (from Texan seed), and 1852 (from Texan or 

 New Mexican seed). 



S. citrullifolium var. setigerum, n. var. Caulis persetiger aculeis 

 rerlexis violaceo-tinctis. Folia sub-bipinnatifida longe petiolata acule- 

 ata (aculeis in petiolis venisque quam his in caule inter se distantiori- 

 bus) utrinque scabriuscula, subtus exigue stellato-pilosa. Infiores- 

 centia unilateralis elongata ca. 12-flora, pedunculo 4-6 cm. longo ; 

 pedicellis aetate 1 cm. longis glanduloso-pilosis. Calyx (apicibus seg- 

 mentorum persistentibus angustis 5 mm. longis exceptis) aculeatus, 

 aetate inter spiculos fere glaber, spiculis majoribus 13 mm. longis. 

 Corolla purpurea irregularis 18 mm. longa, tubo 1.5 mm. longo ; seg- 

 mentis aliquanto incurvatis. Staminum filamenta 2.1 mm. longa; 

 .nitherae 4 rectae 9 mm. longae, quinta arcuata 15 mm. longa. 

 Stylus 17 mm. longus curvatus. Bacca globosa calyce obtecta ca. 



