JAL 



Part 2, 1921] RUBIACEAE 87 



21. PINAROPHYLLON Brand. Univ. Calif. Publ. Bot. 6: 71. 



1914. 



Low perennial herbs, sometimes suRrutescent at the base, pubescent. Leaves opposite, 

 short-petiolate, membranaceous. Stipules foliaceous, deciduous. Flowers small, ebracteolate, 

 the inflorescence axillary, on filiform peduncles, these 1 -flowered or unilaterally few-flowered; 

 hypanthium turbinate; calyx 4- or sometimes 5-lobate, the lobes subequal, persistent; corolla 

 yellow, subrotate, the tube very short, the throat glabrous, the limb 4- or sometimes 5-lobate, 

 the lobes spreading, imbricate, acute; stamens 4 (or 5), inserted at the base of the corolla-tube; 

 filaments short, compressed; anthers exserted, oblong-linear, dorsifixed near the base, obtuse. 

 Disk depressed. Ovary 2-ceIled; style filiform, elongate; stigma clavate or bilobate; ovules 

 numerous, the placentae oblong, peltately affixed to the septum. Capsule small, turbinate or 

 oblong-turbinate, costate, membranaceous, dehiscent at the apex. Seeds numerous, minute, 

 globose, punctate; endosperm fleshy. 



Type species, Pinarophyilon flavum Brand. 



Inflorescence few-flowered; leaf -blades acuminate or attenuate at the apex, the 



secondary veins very prominent beneath. 1. P. flavum. 



Inflorescence usually 1 -flowered; leaf -blades obtuse or acute, the secondary veins 



obscure. 2. P. bullalum. 



1. Pinarophyilon flavum Brand. Univ. Calif. Publ. Bot. 6: 71. 



1914. 



Herbaceous, the stems simple, stout, 5-6 cm. long, densely leafy; leaf-blades oblanceolate, 

 6-14 cm. long, 1.5-3 cm. wide, long-attenuate at the base to a short marginate petiole, acumi- 

 nate or long-attenuate at the apex, bright-green above, sparsely villous with long multicellular 

 hairs, the venation impressed, slightly paler beneath, puberulent or villosulous, especially along 

 the veins, and bearing numerous long multicellular hairs, the venation prominent, the lateral 

 veins numerous (about 20 on each side), arcuate-ascending, the secondary veins very prominent; 

 peduncles numerous, filiform, 3.5-5 cm. long, sparsely long-villous, 3-10-flowered, simple, the 

 flowers secund, the pedicels 2 mm. long or shorter; hypanthium 1-1.5 mm. long, bearing a few 

 long weak hairs; calyx-lobes 4, lance-triangular, acute, about as long as the hypanthium; 

 corolla glabrous, about 4 mm. long, greenish-yellow, the 4 lobes lance-oblong, acute or acumi- 

 nate; capsule about 3 mm. long, broadly turbinate; seeds minute, dark-brown. 



Type locality: Wet rocks of barrancas near Finca Mexiquito, Chiapas. 

 Distribution: Known only from the type locality. 



2. Pinarophyilon bullatum Standley, sp. nov. 



Plants suffrutescent at the base, the stems stout, 3-12 cm. long, erect or decumbent, simple 

 or sparsely branched, densely villous with long slender weak ferruginous hairs, densely leafy; 

 petioles 1 cm. long or shorter; leaf-blades obovate, oblanceolate, or oblong-oblanceolate, 2.5-5.5 

 cm. long, 0.7-1.8 cm. wide, attenuate at the base, acute to rounded at the apex, conspicuously 

 bullate, striolate, bright-green above, sparsely long-villous, the venation impressed or promi- 

 nulous, paler beneath, copiously villous along the veins with weak ferruginous multicellular 

 hairs, the lateral veins prominulous, 5-8 on each side, arcuately divaricate, the secondary veins 

 obscure; peduncles numerous, 1.5-3.5 cm. long, sparsely villous, filiform, flexuous, mostly 1- 

 flowered, sometimes 2-flowered, when 2-flowered the pedicels 1.4 cm. long or shorter; hypan- 

 thium sparsely ferrugino- villous, narrowly turbinate, about 2 mm. long; calyx-lobes 4 or 5, 

 narrowly triangular, acute, about 1 mm. long; corolla 3-4 mm. long, glabrous, the lobes 4 or 

 5, lance-oblong, acute; anthers 1.5 mm. long; capsule narrowly oblong-turbinate, 5-7 mm. long, 

 thin, costate, striolate; seeds minute, dark-brown. 



Type collected between Sepacuite and Secoyoct£, Alta Verapaz, Guatemala, altitude 1100 

 meters, May, 1905, H. Pittier 348 (U. S. Nat. Herb. no. 473013). 

 Distribution: Wet shaded banks, Alta Verapaz, Guatemala. 



