24 THE GENTTS MA>"ETTIA 



lata longe acuminata basi acuta, in juventute scabridula deraum supra 

 nitentia glaberrima ; venis alte sulcato-iinpressis, subtus asperulo- 

 pubescentia venis primariis (quarum lateralibus utrinque 4) valde 

 pvominentibus ; j^^f^olus brevis dense pubescens ; stipulce vaginam 

 brevissimam formantes brevissiiue inter petioles apiculatam. Flores 

 mediocri subsessilibus in pseud-umbellis dispositis alaribus, pedicellis 

 gracilibus longiusculis dense asperulo-pubescentibus, ovario simile 

 induto. Calijx ad basin laciniis in. lanceolatis nee majusculis divisus, 

 mavgine valde revolutis itaque ssepe linearium facie rigidiusculis 

 patentibus, supra glabris dorso pilosis. Corolla angusta subtubularis 

 insuper pauUo ampliato extus dense tomentella. 



Colombia. Cauca : La Paila, Holton 606 ! in herb. Kew. 



Allied to M. calycosa, from vrhicli it is distinguished by the 

 revolute, narrow calyx-lobes, and the coarser, more wrinkled, leaves. 

 These are relatively narrower and much more acuminate than in 

 M. calycosa. M. Holtonii suggests a further link between our 

 second and third main groups — by way of M. calycosa on the one 

 hand, and M. scaherrima on the other. Leaves 7-9 cm. X 2-2*5 cm., 

 witli petiole not exceeding 6 mm. Pedicels up to about 1 cm. long, 

 Calyx-\o\)G& 3'5-4*5 mm. ; corolla 1-7 cm. or longer. 



21. M. scaberrima, sp. nov. 



Frutex scandens asper, caule gracili novitate necnon maturitate ad 

 nodos pubescente aliter glabrescente striato subtereto. Folia sub- 

 coriacea demum valde rugosa mai'gine revoluta inter minora plerumque 

 ovata caudato-acuminata basi rotundata saipe coi-dc&i^, pet iolo brevis- 

 simo densissime strigilloso ; supra pilis rigidulis brevissimis basi bul- 

 bosis scabridula, subtus prtesertim in venis tandem prominentissimis 

 puberula ; stipulae plus minus obsolete vaginantes arista modo setosa 

 onusta) interpetiolari rigidiuscula. Flores inter minores anguste 

 tubulares in aiillis pauci sub-umbellatim dispositi, pedicelli brevius- 

 culi demum longiores graciliusculi dense pubescentes, ovario simile 

 induto. Calyx ad basin in laciniis plus minus oblongis margine 

 valde revolutis divisus rigidiusculis foliis simile indutis. Corolla 

 M. calycoscB pro affinitate parva, extus typice tomentella, lobis latis 

 rotundatis. Capsula subglobosa apice truncaia puberula plus minus 

 glabrescens. 



Colombia. Linden 895! Mariquita : LaPalmilla, 5200 ft. 

 TWff«« 1792 (=142)! 



This striking species, with its tough, wrinkled, scabrid leaves, is 

 allied to the preceding and to 31. calycosa ; it is distinct especially in 

 the leaf -characters, the arista te stipules, and the calyx-lobes. Leaves 

 25-4 cm. X l"2-2 cm. CalyxAohes 3-7 mm. long. Corolla 1"2 cm., 

 or rather larger. 



22. M. EECUEVA Sprague, in Bull. Herb. Boiss. ii. v. 835 (1905), 

 Ecuador. Mt. Tunguragua, 11,000 ft. " Frutex tenuis volubilis 



ramosus. Flores carnei. Folia carnosa." Spruce 5835 ! 



A species of striking appearance, recalling the coarser species of 

 Jledyotis, or Mallostoma. 



