OP ARTS AND SCIENCES. 417 



Spermacoce ? Rio Blanco, in moist places ; June. (32.) 



Spermacoce (Diphragmus) asperifolia, Mart. & Gal., ex char. 

 {Diphragmus scaber, Presl.) Tequila, by roadsides. (397.) — This 

 is certainly Presl's plant, which, like Palmer's, was in fruit only. It 

 is most probably, from the description, S. asperifolia. Mart. & Gal., of 

 which only flowering specimens are described, but it should be com- 

 pared with Galeotti's no. 2G26, which is not found at Kew. Probably 

 Diphragmus may well be retained as a section. The fruit separates 

 completely into its two carpels, splitting the broad septum in two ; 

 each part of it then separates as an oval valve, opening almost the 

 whole ventral face of the carpel, and is for a time hinged at base. 



Spermacoce H^nkeana, Ilemsl. {Borreria, DC.) Very like 

 /S. podocephala {Borreria, DC), ex char., but it has four equal and 

 herbaceous calyx-teeth. Rio Blanco, on hills among pines ; October. 

 (743.) 



MiTRACARPUS BREVIFLORUS, Gray. Guadalajara, by roadsides; 

 September. (453.) — Rio Blanco, sides of overhanging rocks ; Octo- 

 ber. (653.) 



RiCHARDiA SCABRA, Linn. Rio Blanco, in moist places ; June. 

 (34.) 



Galium ? Rio Blanco, in shady ravines ; September, (753.) 



Valeriana apiifolia. Gray, n. sp. V. ceratophyllcE sat affinis, ut 

 videtur perennis radicibus fibrosis ; caule gracili folioso ; foliis 3-5- 

 sectis partitisve, segmentis laciniato-paucilobatis vel pinnatifidis, lobis 

 sublinearibus parvis. — Rio Blanco, along shaded water-courses ; Sep- 

 tember. (564.) Fruit not seen. It is the same as 2947 Bourgeau, 

 from Orizaba, and was collected there previously by Salle and by 

 F. IMueller. 



Valeriana Palmeri, Gray, n. sp. Herbacea e radice annua (?) 

 erecta : caule ultra bipedali inferne retrorsum hirsuto superne cum 

 panicula longe nuda laxifiora glaberrimo ; foliis inferioribus oblongis 

 basi in petiolum marginatum brevem attenuatis, imis subintegerrimis, 

 sequentibus repando-dentatis vel lyrato-pinnatifidis, superioribus dissitis 

 parvulis sessilibus pinnati- (3-5-) sectis, bractealibus filiformibus vel sub- 

 ulatis minimis. — Rio Blanco, on the river bank ; September. (754.) 



Vernonia serratuloides, HBK. Nov. Gen. & Spec. 4. 26, t. 316. 

 Rio Blanco, on sides of caiions ; September. (605.) 



Vernonia fouosa, Schultz Bip. {Monosis foliosa, Benth. PI. 

 Hartw. 133.) Rio Blanco, among rocks ; October. (678.) 



BoLANOSA CouLTERi, Gray, PI. Wright. 1. 82. Rio Blanco, on 

 rocky hillsides ; September. (587.) A very interesting rediscovery. 



VOL. XXII. (n. S. XIV.) 27 



