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FIVE NEW SPECIES OF LOBELIACEAE 

 H. A. Gleason 

 \/ Centropogon poasensis n. sp. 



Stem woody, densely and coarsely ferruginous-stellate above, 

 becoming glabrous 2-3 dm. from the summit, the internodes 

 about I cm. long; petioles stout, densely tomentose, 10-15 rnm. 

 long; leaf -blades thin, dull green, oblong-elliptic, 35-60 mm. long, 

 17-25 mm. wide, the uppermost somewhat smaller, abruptly 

 acuminate or slightly falcate, sharply spinulose-denticulate with 

 black, callous, subulate-triangular, salient teeth (5-6 teeth per 

 cm. of margin, 0.3-0.5 mm. long), obtuse to subrotund at base, 

 sparsely stellate along the midvein and glabrous on the surface 

 above, coarsely ferruginous-stellate below, especially on the 

 veins; lateral veins about 5 mm. apart, broadly divergent, the 

 veinlets obscure; peduncles axillary, slender, spreading, 3-5 cm. 

 long, densely ferruginous-tomentose, subulately bracteolate 

 near the base; hypanthium broadly hemispherical, 4 mm. high, 

 7-8 mm. wide when pressed, densely tomentose at the base, 

 sparsely stellate above; sepals erect, triangular-subulate, 3 mm. 

 long, sparsely and minutely denticulate, thinly stellate, especially 

 at the margin; corolla about 28 mm. long, red, prominently and 

 coarsely stellate, especially toward the summit, the tube lightly 

 curved, the lobes linear-falcate, strongly decurved; filaments 

 exserted 6-10 mm., prominently white-villous; anther-tube 7 

 mm. long, lead-color, sparsely pilose in the fissures, the two 

 lower anthers penicillate. 



Type, Smith 6626, collected Mar. 1896, Volcan Poas, Prov. 

 Alajuela, Costa Rica, altitude 2500 m., and deposited in the 

 herbarium of the New York Botanical Garden. Duplicates of 

 the type are in various other herbaria, and, so far as examined, 

 agree exactly with it. A second collection from the same locality 

 is Pitiier 2045. The species was originally distributed by Capt. 

 Smith as Siphocampylus Regelii Vatke, which is distinguished by 

 its large leaves, 10-12 cm. long and 5-6 cm. wide, its shorter 

 sepals, and its thin cinereous tomentum, composed of branched 

 hairs only about half as large as those of C. poasensis. 



Both species are true Centropogons, and show by their hy- 

 panthia, corollas, and tomentum their close relationships to a 

 large group of species in northwestern South America. Sipho- 

 campylus Regelii Vatke is better known as Centropogon cos- 

 taricanus Planch. & Oerst., a name which not only places the 

 plant in the proper genus but has also the advantage of seventeen 



