412 



MEMOIRS OF THE NEW YORK BOTANICAL GARDEN [Vol. 9, No. 3 



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3, hyaline, connate at the base, separate at the apex, about 1.2 mm long, gla- 

 brous; stamens 3, short-exserted; anthers white, about 0.2 mm long; pistillate 

 florets: sepals 3, separate, hyaline, navicular, concave, lanceolate, about 2.2 mm 

 long and 0.6 mm wide, acute at the apex, glabrous; petals 3, hyaline, free at the 

 base and apex, oblanceolate, about 1.7 mm long and 0.5 mm wide, glabrous; style 

 abbreviated, about 0.2 mm long, glabrous, its 3 appendages slender, erect, about 

 1.2 mm long, borne at the same level as and alternate with the stigmas; stigmas 

 3, about 1 mm long; ovary globose, glabrous, stramineous, 3-sulcate, 3-celled. 



TYPE: Julian A. Steyermark & John J. Wurdack 792, swampy depressions 

 along the river in wet savannas along the east branch of the headwaters of the 

 Rio Tirica, alt. of 2120 m, in the central section of Chimanta Massif, Bolivar, 

 Venezuela, February 12, 1955 (NY). The collectors state that the species was 

 locally frequent, forming large masses. 



Syngonanthus savannarum var. glabrescens Moldenke, var. nov. 



Haec varietas a forma typica speciei recedit caulibus multiramosis, ramis ca. 

 10 cm longis dense foliosis et ubique glabris vel subglabratis. 



TYPE: Julian A. Steyermark & John J. Wurdack 539, along a rivulet at the 

 base of the Upper Falls of the Rio Tirica above Summit Camp, growing in dense 

 tufts, alt. 1940-1050 m. Central Section of the Chimanta Massif, Bolivar, Vene- 

 zuela, February 7, 1955 (NY). The collectors note that the leaves are mem- 

 branous, grass-green, ascending, the peduncles pale-green, the involucres gray- 

 blackish, and the heads white, and that the plant is rare at the type locality. 



Syngonanthus tiricensis Moldenke, sp. nov. 



Herba pumila; caulibus valde abbreviatis ad apicem dense albido-tomentosis; 

 foliis dense caespitosis linearibus vel graminoideis pluminusve subulatis ob- 

 tusis glabris; pedunculis 1-3, griseis densiuscule albido-pilosis, pilis sericeis 

 plusminusve subadpressis; vaginis gracilibus contortis multistriatis stramineis 

 glabris, laminis obtusis glabris; capitulis hemisphaericis sordido-albidis; bracte- 

 olis involucri stramineis anguste ellipticis obtusis glabris nitidis; receptaculo 

 glabro. 



Dwarf herb; stems much abbreviated, with a dense mass of gray-white to- 

 mentum at the apex; leaves densely cespitose, erect, thin-textured but not mem- 

 branous, bright-green, linear or grass-like, 5-18 mm long, more or less subulate, 

 obtuse at the apex, glabrous, not fenestrate nor striate; peduncles 1-3, erect, 

 grayish, 11-14.5 cm long, rather densely whitish-pilose with silky and more or 

 less subappressed hairs; sheaths slender, 2-3 cm long, twisted, many-striate, 

 stramineous, glabrous, the blade erect or suberect, about 4 mm long, obtuse at the 

 apex v glabrous; heads buff-white, hemispheric 1-1.3 cm wide; involucral bractlets 

 stramineous, rather firm, narrow-elliptic, about 4 mm long and 1.2 mm wide, ob- 

 tuse at the apex, glabrous, shiny; receptacle glabrous; flowers pedicellate; 

 staminate florets: sepals 3, separate, hyaline, oblong, about 2.5 mm long and 

 0.5 mm wide, obtuse or subacute at the apex, glabrous; petals 3, hyaline, connate 

 at the base into a tube about 0.7 mm long, the free apical portions ovate, about 1 

 mm long, 0.5-0.7 mm wide> erect, rounded at the apex; stamens 3, slightly ex- 

 serted; filaments rather stout, white, about 0.7 mm long, glabrous; anthers small, 

 white, about 0.2 mm long and wide; pistillate florets not seen. 



TYPE: Julian A. Steyermark & John J. Wurdack 739), among rocks in rocky 

 and swampy savanna between the west and east branches of the headwaters of the 

 Rio Tirica, alt. 2120-2210 m, in the central section of Chimanta Massif, Bolivar, 

 Venezuela, February 11, 1955 (NY). 



