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



mm long, similar to the second glume but glabrous on the back, the awnlike tip 

 as much as 1 mm long; lemma of first fertile floret 5.5*5.7 mm long, acute, rarely 

 with an awnlike tip 0.5 mm long, glabrous on the back, more or less hispidulous 

 at the tip, the margins minutely ciliate; palea much narrower than the lemma, 3 

 mm long, sparsely pubescent between the keels, the nerves minutely excurrent, 

 the tip hispidulous between the nerves. 



TYPE: infrequent, thickets bordering stream, Lower Cano Negro, Cerro 

 Sipapo (Paraque), Terr. Amazonas, Venezuela, January 1, 1949. Bassett Maguire 

 & Louis Politi 28101; U.S. National Herbarium Nos. 2,040,184, 2,040,185. 



13. Myriocladus paraquensis Swallen, sp. nov. Figure 3i,j. 



Culmi usque ad 5 m alti; culmi sterile: vaginae 9.5 cm longae, scaberulae, in 

 ore fimbriatae, ligula exteriore 1 mm longa, crassa, erosa; laminae 42 cm longae, 

 11.5 cm latae, acuminatae, subcordatae, marginibus scabrae; culmorum fertilium 

 rami 100-135 cm longi; laminae 9*12 cm longae, ca. 6 cm latae, suprema brevior; 

 panicula 42-48 cm longa racemis numerosis rigide adscendentibus, inferioribus 

 3.5-4.5 cm longis, axe et ramis dense pubescens; spiculae brevipedicellatae, 

 appressae, floribus fertilibus 1 vel 2; glumae acutae vel acuminatae, pilosae, 

 prima 2-2.8 mm longae, secunda latior 3.2-4.5 mm longa; lemma sterile 3*3.5 mm 

 longum, acutum vel subobtusum, interdum mucronatum; lemma fertile primum 5*5.5 

 mm longum, acutum vel mucronatum, glabrum, marginibus ciliatum; palea quam 

 lemmate longior vel brevior, concava, inter carinam sparse pubescens, summo 

 angusta, truncata, hispidula, nerviis minute excurrentibus; rachilla crassa, 

 pubescens. 



Culms as much as 5 m high; sterile culms 1.4 cm thick, hollow; sheaths about 

 9.5 cm long, scaberulous, the rim about 1mm long, thick, erose, fimbriate in the 

 throat with long curly hairs; blades of sterile culms 42 cm long, 11.5 cm wide, the 

 tip acuminate, broadly rounded, subcordate at the base, the margins scabrous; 

 branches of flowering culms 100-135 cm long, the blades* 9-12 cm long, about 

 6 cm wide, or the uppermost smaller; inflorescence 42-48 cm long, with numerous 

 stiffly ascending racemes, the lower ones rather distant or approximate, 3.5-4.5 

 cm long, becoming shorter and crowded toward the summit, the axis and branches 

 densely pubescent; spikelets with 1 or 2 fertile florets, short-pedicellate, ap- 

 pressed; glumes acute or acuminate, pilose, the first 2-2.8 mm long, rarely less, 

 the second somewhat broader 3.2-4.5 mm long; sterile lemma 3-3o5 mm long, 

 acute or subobtuse, sometimes mucronate, pilose only at the summit; lemma of 

 first fertile floret 5-5-5 mm long, acute, sometimes mucronate, glabrous, usually 

 finely ciliate on the margins; palea a little shorter to a little longer than the 

 lemma, concave, sparsely pubescent between the keels, the tip narrow, truncate, 

 hispidulous, the nerves minutely excurrent; rachilla rather thick, pubescent, the 

 segment above the sterile lemma 0.5 mm long, the one above the first fertile 

 lemma 2 mm long. 



TYPE: common, cliffs above Savanna Camp, Cerro Sipapo (Paraque), Terr. 

 Amazonas, Venezuela, January 17, 1949, Bassett Maguire & Louis Politi 28395; 

 U. S. National Herbarium Nos. 2,040,181, 2,040,182, and 2,040,183. 



15. Myriocladus paludicolus Swallen, sp. nov. Figure 4b. 



Culmi fertiles 0.3-1 m alti; culmi steriles usque ad 8 m alti; vaginae 4-5 cm 

 longae. condensatae, auriculis fimbriatis, ligula exteriore breve, crassa, glabra 

 vel minute ciliata; culmorum sterilium laminae 30 cm longae, 10.5 cm latae, 

 subcardatae; culmorum fertilium laminae 9-16 cm longae, 4-6 cm latae, vel 



