1963] 



BOTAXY OF THE GUAYAXA HIGHLANDS PART V 



243 



Maguire 31644 (NY). Bolivar: Auyan-tepui ; alt. 1100 m; Apr 1956, Vareschi & 

 Foldats 4576 f. (YEN) ; Sierra Ichun: Salto Maria Espuma, Rio Paragua; 28 Dec 

 1961, Steyermark 90389 A (NY, YEN). 



The type collection of Mattuschkea hispida H.B.K., basionym of Perama 

 hispida, was collected by Humboldt and Bonpland from ' ' arenosis humidis prope 

 Atures Orinocensium " (Nov. Gen. & Sp. PI. 2: 271. 1817). I have not seen the 

 holotype, but have interpreted the topotype collections of Chaff an jon 177, A. 

 Gaillard 267, and Williams 13089, as representing the plant described by Hum- 

 boldt and Bonpland. These topotype collections are in agreement with such items 

 in the description as: "ramis . . . hispidis, "Folia tenia, linearia aut lineari- 

 lanceolata, hispidula," "Calyx . . . laciniis margine hispido-ciliatis." Although 

 the leaves in the Williams 13089 and Gaillard 267 specimens are slightly broader 

 and less generally linear or linear-lanceolate, the Chaff an jon 177 collection is a 

 better match in this respect. However, all three collections exhibit the pubescent 

 leaves and stems. Since the lower portion of the stems in the Williams 13089 

 collection has spreading hairs, I have interpreted the Mattuschkea hispida as a 

 taxon having spreading hairs on the lower part of the stem. 



Of the collections cited above two are atypical. One {Maguire, Wurdack, & 

 Bunting 37614) with the outer surface of the corollas glabrous and with the 

 spreading leaves glabrate to only sparsely pubescent may represent a hybrid 

 between var. galioides and var. hispida. It is placed in the var. hispida because 

 of the spreading hairs on the lower portion of the stem. The other, represented 

 by Maguire, Wurdack, Keith, & Maguire 41667, has the heads elongated to 17 mm 

 long, varying from 5-17 mm, but otherwise appears to be referable to var. hispida 

 f. hispida. 



3f. Perama galioides var. hispida f . cinerea Steyermark, f . now 



A var. galioides f. hispida pilis densis cinereis vel albidis recedit ; foliis 

 ternatim verticillatis incrassatis marginibus revolutis. 



Distribution. Known only from southwestern Yenezuela. 



V ENEZUELA. Amazonas : occasional in montane caiio savanna, Cerro 

 Moriche, Rio Ventuari ; alt. 800 m; 14 Jan 1951, Maguire, Cowan, & Wurdack 

 30886 (holotype NY) ; Puerto Ayacucho; 31 Sep 1960, Foldats 3602 (YEN). 



This variation of var. hispida has the hairs on the stems, leaves, and calyx 

 gray or white instead of bulf, stramineous, or ochroleucous at the base as in 

 typical var. hispida. In typical var. hispida the hairs on the leaves are weaker, 

 more laxly spreading, and often much sparser. 



The holotype has the thickish leaves covered on both sides with rigid short 

 hairs pointing to the apex. In the collection of Foldats 3602 the leaves have less 

 rigid and longer hairs and the leaves are thinner with 2-4 weak nerves on either 

 side of the midrib. In the holotype collection the leaves have 1-3 strong elevated 

 nerves below. 



3g. Perama galioides var. intermedia Steyerm., var. nov. 



A var. galioides, var. longiflora, et var. hispida calycis laciniis valde arcuato- 

 vel erecto-adscendentibus vel arcuato-incurvatis confertis compactis, inflores- 

 centiis 10-15 mm longis 7-10 mm latis recedit ; a var. densipila pilis brevioribus, 

 calycis laciniis brevioribus, foliis ternatim verticillatis angustioribus praecipue 

 erecto-adscendentibus recedit ; caulibus saepe unicapitulatis vel ramosis cum 2-3 



