1953] 



BOTANY OF THE GUAYANA HIGHLAND 



149 



latis valde costatis, interioribus oblongis 5-6 mm. longis 2.0-2.5 mm. latis; 

 corollis crateriformibus 6-7 mm. longis glabris, tubo ca. 2 mm. longo, limbo 

 2.0-2.5 mm. longo, lobis lanceolatis acutis ca. 1.5 mm. longis rufo-marginatis; 

 antheris exsertis; achaeniis ca. 3 mm. longis valde hirsutis 4-costatis 5 aliquantum 

 compressis, costis lateralibus prominentioribus, squamis 20-25, 1-2-seriatis 

 lineari-attenuatis ca. 5 mm. longis; paleis submembranaceis conduplicatis 4-5 

 mm. longis. 



TYPE; branched shrub 3-4 m. tall with yellow heads, infrequent, terraces at 

 1900 m= alt., North Mountain, Peak I, Cerro Sipapo, Terr. Amazonas, Venezuela, 

 Bassett Maguire & Louis Politi 28602; New York Botanical Garden. Paratypes: 

 Cerro Sipapo, Maguire & Politi: shrub or small tree to 5 m. high, flowers yellow, 

 on granite, occasional along open water course above Intermediate Camp, 500 

 m. alt. , 28717; shrub to 2 m. high, opening along stream above Intermediate Camp, 

 alt. 500 m., 274 80. 



Calea sipapoana and C. oliverii Robins. & Greenm. of the region of Mt. Ro- 

 raima stand very close together. In the latter the leaves are ternate, smaller, 

 less conspicuously serrate, and the petioles shorter. The heads are broader, 

 the flowers and achenes about two-thirds as large, and the achenes less promi- 

 nently costate and hirsute. 



Calea suffruticosa Maguire & Wurdack, sp. nov. 



Suffruticosa 3-4 (5) dm. alta; caulibus teretibus paucifurcatis 1-2 mm. diam., 

 ramulis minute cinereo-appresso-hispidulissimis, nodis 1-2 cm. longis; foliis 

 ellipticis vel oblanceolatis, laminis 1.5-2.0 cm. longis, 4-8 mm. latis, sursum 

 paucicrenulatis, ad basim integris, glabris costa excepta conspicue glanduloso- 

 punctatis uninervis, apice obtuso, basi acuta, petiolo 3-4 mm. longo puberulo; 

 capitulis campanulatis terminalibus solitariis, pedunculis subfiliformibus ca. 3 

 cm. longis; bracteis involucri gradatis jugis exterioribus subfoliaceis oblongis 

 ca. 3 mm. longis extus puberulis, phyllaribus 4-6-seriatis, exterioribus ovatis 

 ca. 3 mm. longis ca. 2.5 mm. latis, mediis elliptico-oblongis ca. 6 mm. longis 

 3 mm. latis glabrescentibus scario-marginatis, interioribus 7-8 mm. longis ca. 

 2 mm. latis oblongo-lanceolatis subacutis 3-5-nervis; floribus ligulatis 4-5, ligu- 

 lis 8-10 mm. longis 1.5-2.0 mm. latis; floribus discoideis 10-15, 5 mm. longis, 

 limbo ca. 3 mm. longo, in tubo abrupte constricto 2 mm. longo, lobis anguste 

 lanceolatis 1.6-1.7 mm. longis; pappo squamiformi, squamis uniseriatis ca. 2.5 

 mm. longis eroso-scariosis oblanceolatis uninervis aristatis; achaeniis ca. 3 mm. 

 longis obtuse 4-angulatis prominenter hirsutulosis sparse punctato-glandulosis. 



TYPE: frutice hasta 50 cm. alto, playa del Rio Caroni al pie del raudal 

 Kurukuya, 740 m. alt., Guayana, Venezuela, Octubre 9, 1946, F, Cardona 1779; 

 U. S. National Herbarium. 



Calea suffruticosa, belonging to Eucalea, seems to have no near relatives in 

 Guayana. Indeed, its relationships seem altogether obscure. 



Calea tricephala Maguire, sp. nov. 



Frutex 3 m. altus; ramulis in sicco sulcatis sparse hirsutis patentibus; foliis 

 oppositis ellipticis vel lanceolatis vel oblanceolatis (4) 5-7 cm. longis (2) 3-4 

 cm. latis, firmiter papyraceis vel chartaceis, supra glabris subtus resinoso- 

 punctatis sparse hirsutis vel glabris, apice acuto, basi acuta, margine serrato 

 sursum basim integro, venis primariis ferme 2 jugis recurvis ad apicem, venis 

 secondariis anastomosis cum primariis subtus prominentibus supra prominulis, 

 petiolo 10-15 mm. longo sparse ciliato; cymis terminalibus tricephalis vel 

 monocephalis; pedunculis ebracteatis 2-5 cm. longis sparse hirsutis valde sul- 

 catis; involucris late campanulatis 1.5-2.0 cm. longis 2.0-2.5' cm. latis, bracteis 

 exterioribus 4 foliaceis late ovatis acutis vel obtusculis 8-18 mm. longis 5-11 



