18 DR. I. B. BALFOrU ON THE 



concavis margine ciliatis^ extus puberuUs ; corolla altelo bata, laci- 

 niis oblongo-ellipticis glabris ; corona exteriore corolU^ adnata, alte 

 5-partIta, lobjs tridentatis singulo squama? interiorl adhserente, dente 

 central! maximo; interiore exteriorem triplo excedente, segmentis 

 supcrne saccatis, dolabriformibus, gynostegio subfequilongis ; stig- 

 mate apiculato, obscure bilobato, umbilicato. 

 Hab, in insula late dispersa. Norn, viilg. Liane Cal^- 



Probably merely a variety of S, viminale^ R, Br. (DC. Prod, 

 viii. 538), from which the only point of difference is the deeply 

 5-partite outer corona. I have seen one flower in which there 

 was an arrangement of the corona exactly halfway between the 

 two forms. 



ACANTIIACE.1:. 



Hypokstes rodriguestana, Balf.JiL, sp. n. 



Ilerba pai'va ramosissima glabra, ramis crassis lignosis ; foliis longe 

 petiolatis ovato-lanceolatis, inferne deltoideis, integris, subcoriaceis, 

 substrigulosis ; racemis breviter peduneulatis in axillis foliorura con- 

 fertis, bracteis obovatis v. oblanceolatis capitula uniflora opposita 

 arete disposita gerentibus ; involucre tubuloso, subventricoso, tetra- 

 phyllo, ad medium discrete, lobis insequalibus, exterioribuslongioribus, 

 ovato-acutis, extus plaga lineari lateraliter notatis, interioribus lanceo- 

 latis brevioribus ; calyce brevi extus hispidulo, laciniis tubo brevio- 

 ribus, ciliatis j corolla alte bifida, pilosa, labiis tubo subsequilongis, 

 superiore oblongo, inferiore trident ato v. trifidoj staminibus et fila- 

 mentis exsertis ; ovario oblongo, eompresso, glabro ; stylo filiformi, 

 exserto. 

 Hab, in locis excelgis montis Malartic, sparse dispersa. 



A dwarfed plant allied to H, Bojerianum, DC Prod. xi. 506, 

 of Madagascar. 



H. iNCONSPicuA, Balf.JiL, sp. n. 



Herba tenuis, caule repente valde articulato, ad nodos radicante ; folus 

 oppositis distantibus ovalibus v. obovatis, obtusis v. snbaeutis, strigo- 

 sis integris, inferne in petiolum subsequilongum longiorem attenuatis ; 

 capitulis solitariis axillaribus subsessilibus, bracteis nuUis ; invohicro 

 unifloro strigosotetraphyllo, laciniis lineari-lanceolatis inaequalibusque 

 ad medium connatis, exterioribus dimidio longioribus ; calyce brevis- 

 simo lobis lanceolatis acuminatis, involucre multo breviore ; corolla 

 involucro longiore : ca;t. ign. 



Hab. In solo calcareo a litore remoto secus extremitatem occidentalem 



insulse sparse crescit. 



An ally of //. ser2)e7is, E. Br. ; DC. Prod. xi. 501. A Mauritian 

 plant, which has larger leaves and glabrous involucres. 



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