372 University of California Puhlications in Botany [Vol.6 



The mid-nerve of the leaf is very prominent and the leaves 

 themselves are double the length of the internodes. Collected near 

 Zacuapan, Vera Cruz, Mexico. Type, Herb. Univ. Calif. No. 141590. 



Vincetoxicum (Gonolohus) atrocoronatum sp. nov. 



Ramis vetustis cortiee suberea puberula, junioribus hirsutis simul 

 puberulis : f oliis oblongo-ovatis acuminatis, basi sinu profundo cum 

 auriculis fere tangentibus, utrinque pubescentibus, ca. 4 cm. lougis, 

 1.5 cm. latis ; petiolis puberulis parce hirsutisque ca. 2 cm. longis: 

 pedunculis ca. 1.7 cm. longis, ca. 4-floris; pedicellis usque ad 1 cm. 

 longis : calj'cis segmentis ovato-acutis hirsutis ciliatis, ca. 3 mm. longis ; 

 corolla ca. 1 cm. longa ochroleuca campanulata profunde lobata, lobis 

 late lanceolatis reticulato-venosis ; corona atro-fusca poculiformi basi 

 tubi staminei adnata, stigma superanti, brevissime 5-secta, ad angulos 

 fimbriata. Folliculi desunt. 



The few specimens that were collected seem to be branches of a 

 large plant. A noteworthy character is the large corona much ex- 

 ceeding the stigma and in the dried specimens enveloping it. Collected 

 at Barranca de las Pilas, Puebla. No. 7540. Type, Univ. Calif. No. 

 141701. 



Ipomoea sylvestris Brandg. 



Univ. Calif. Publ. Bot., vi, 190. 



Recent collections enable the description of this species to be made 

 more complete : capsulis glabris ovato-acutis ca. 7 mm. longis, ab apice 

 in valvas dehiscentibus : seminibus glabris basi sericeo-villosis pilis 

 semen superantibus. 



Ipomoea ursina Brandg. 



Univ. Calif. Publ. Bot., iv, 382 



This species is very variable as to its pubescence and shape of 

 leaves. Specimens from Zacuapan in fruit enable the description to 

 be completed : cap.sulis glabris ovatis (juam sepalis duplo longioribus, 

 ab apice in valvas dehiscentibus : seminibus basi sericeo-villosis pilis 

 semina multo superantibus. 



Bassovia Purpusii sp. nov. 



Glabra, ramosa : caulibus sulcatis : f oliis ovato-acuminatis, basi in 

 petiolum ca. 1.7 cm. longum attenuatis, margine integris, subtus nervis 

 prominentibus, usque ad 14 cm. longis, 7 cm. latis: umbellis 5-10-floris, 

 pedicellis ca. 13 mm. longis; calyce poculiformi deinde paululum aucto 

 diametro 8 mm. ; corolla ca. 2 cm. longo in lobos 5 profunde secta, 

 ae.stivatione valvata ; staminibus 5, antheris loculis parallelis in longi- 

 tudinem dehiscentibus, filamentis complanatis quam antheris midto 

 brevioribus: bacca globosa polysperma. 



