OF AKTS AND SCIENCES. 285 



angled, hispid, sheathed with 4 to 7 obliquely truncate funnelform acute 

 nerved bracts, the terminal one sheathing the base of the solitary leaf 

 and of the nearly sessile raceme : leaf oblong, nearly sessile, 1 or 2 

 inches long, acute at base, 3-denticulate at the apex, dark green, pur- 

 plish beneath, 5-nerved, the outer nerve marginal : raceme usually 

 solitary, about 6-flowered, much shorter than the leaf ; pedicels very 

 short, equalling the sheathing bracts : sepals brown-purple, 2 lines 

 long, somewhat spreading, fleshy, oblong, acutish, the lower united to 

 the middle ; petals nearly equalling the column, thin, ciliate, broad- 

 oblong, obtusish, brownish above ; lip somewhat longer, ligulate, cili- 

 ate, dark brown, not crested : column yellowish, narrow below, broadly 

 winded above, the wings and crest ciliate-lacerate. — Chocou forests; 

 described from plants in flower at Cambridge, November, 1887. Named 

 in memory of Mr. Frank E. Blaisdell, the energetic young manager of 

 the plantation of the " Tropical Products Company " upon the Chocon, 

 to whom I was much indebted for assistance during my visit there 

 in 1885. 



Pleurothallis Choconiana. Of the Apodce ccespitosce group : 

 stems numerous, very short (1 or 2 lines) and slender, bearing a 

 peduncle from the joint below the single leaf : leaf deep green (some- 

 what cossious), oblong-oblanceolate, attenuate to a slender petiole, 

 acute or obtusish and minutely bidentate at the apex, thick-margined, 

 smooth above, many-striate beneath, \ to 1 inch long : peduncle fili- 

 form, 2 to 4 inches long, 4-6 flowered ; bracts minute ; pedicels 1 to 

 3 lines long : lower sepals united very nearly to the apex, oblong- 

 lanceolate, gibbous and subsaccate at base, yellowish, faintly 4-nerved, 

 3 or 4 lines long, the upper somewhat shorter, lanceolate, acuminate, 

 yellowish with 3 brownish nerves ; petals equalling the column, ob- 

 long, acutish, pale yellow with brown midnerve ; lip somewhat longer, 

 ligulate, entire, obtuse, channelled, yellowish with 2 or 3 brown nerves: 

 column white, narrowly winged, 2-calloused at the articulation with the 

 lip. — In the Chocon forests and at the ruins of Quirigua, March 

 and April, 1885. Described from plants in bloom at Cambridge, 

 July, 1887. 



Pleurothallis Brighami. Of the same group ; stems very 

 slender and closely cespitose : leaves bright green and shining on 

 both sides, not striate nor margined, oblanceolate, acute and bidentate 

 at the apex, attenuate at base, 1 or 2 inches long : peduncle filiform, 

 equalling the leaf, usually 1-flowered ; bracts sheathing, acuminate, 

 2£ lines long; pedicel 4 lines long: lateral sepals united to above the 

 middle, somewhat gibbous, oblong, shortly acuminate, carinate, 4 lines 



