Plants Collected in Paraguay. 233 



Oncidiiim? 



Caballero (394 a) ; banks of the Tebicuary River (510); Pilco- 

 mayo River (1551). January. 



An epiphyte ver}^ common on trees in moist woods in many parts 

 of Paraguay, throwing up scapes from 10 to 20 cm. high, with 

 many lateral racemes of flowers. Flowers small, purple, sessile. 

 Found mostly in fruit. Pod oblong, about 5 mm. in length. The 

 leaves are very thick, elliptical, keeled, 4-12 cm. long and 12-20 

 mm. broad, many-nerved, acute at either end. 



The plant forms large bunches of roots, leaves, and stems on the 

 trunks and limbs of trees. 



Ornithoceplialiis, Sp. 



Caballero (510 a). January. 



Campylocentrum^ Sp. 



Pilcomayo River (1552). January. 



Common on trees in the Pilcomayo forests. The stems run along 

 the trunk, throwing out long roots, lateral flowering branches, and 

 other stems at intervals. Leaves narrow lanceolate, 4-Y cm. long. 

 Flowers in lateral spikes, 2-ranked, each under a small bract ; the 

 ovary slender, 6-8 mm. long, surmounted by a purplish perianth 

 about 2 mm. long, the segments acute ; the spur short, blunt, up- 

 turned. Many of the long white-corticated roots dangle in the air 

 for 10-18 cm., giving a strange, straggling appearance to the plant. 



Habenaria Goiirlieana, Gill., Lindl. Gen. and Sp. Orch. 



Pilcomayo River (861). January. 



Stem 4 or 5 dm. high. Leaves lanceolate, 15-20 cm. long, run- 

 ning into acute, sheathing bracts above. Flowers pale yellow, 

 numerous, in a short raceme at the summit of the stem ; ovary very 

 long and slender; sepals broad ovate; petals much longer, almost 

 capillary ; lip about as long and narrow as the petals, 3-lobed, the 

 middle lobe much the longest ; spur over 10 cm. in length, clavate 

 at the tip, the lower end generally hidden under the long, acute 

 floral bracts. The ovary is about 3 cm, long, and on a pedicel 

 about the same length. Flowers somewhat nodding, the very nar- 

 row and projecting petals and lip, together with the extraordinarily 

 long and slender spur, giving them a peculiar appearance. In moist, 

 open woods. 



