150 MERRILL. 



2. CLEISTOLORANTHUS gen. nov. 



Differt Lorantho corollae tubo apice corollae limborum interioiibus 

 partibus coalitis claiiso, corollae limborum exterioribus pavtibus 4, 

 liberis. late triangulari-obovatis, brevibus, patulis, apice subtruncatis, 

 irregulariter dentatis. 



]. Cleistoloranthus verticillatus sp. nov. 



Glaber; foliis verticillatis, quaternis, petiolatis, oblongo-lanceolati.s, 

 coriaceis, usque ad 8 cm longis, basi acutis, apice acuminatis, nervis 

 utrinque 2, subobsoletis ; inflorescentiis axillaribus, solitariis, floribus 

 4-meris, in triadibus paucis, umbellatim dispositis, lateralibus breviter 

 pedicellatis, intermedio sessile; corolla cylindracea, 4.5 mm longa, apice 

 clausa. 



Glabrous throughout. Branches terete, brown or gray, slender, slightly 

 lenticcllate, shining. Leaves whorled, four at each node, oblong-lanceo- 

 late, coriaceous, slightly shining when dry, 4 to 8 cm long, 1 to 2.5 cm 

 wide, the base acute, the apex acuminate, acumen blunt or acute; nerves 

 about 2 on each side of the midrib, very obscure ; petioles 3 to 7 cm long. 

 Inflorescence axillary, solitary, of depauperate umbellately disposed triads, 

 the common peduncle about 1.5 cm long, slender, bearing at its apex three 

 or four umbellately disposed branches, each branch in turn bearing a single 

 triad of flowers, the branches about 6 mm long, the middle flower of each 

 triad sessile, the lateral ones with pedicels about 2 mm in length. Flowers 

 pink or red, 4-merous, each subtended by a single, ovate, acuminate 

 bract about 1.5 mm long. Calyx 2 mm long, somewhat narrowly ovoid, 

 its limb obscurely 4-toothed, slightly produced. Corolla 4.5 mm long, 

 cylindric, 1 mm in diameter, the throat closed by inward projections of 

 the corolla-limb, which are united and form a conical body closing the 

 top of the corolla-tube, the exterior part of the limb consisting of four 

 short, broadly triangular-obovate lobes, 2 to 2.3 mm wide, 1 to 2 mm long, 

 their apices truncate and irregularly toothed. Stamens 4, included; fila,- 

 ments inserted near the base of the corolla-tube, opposite the lobes, 2.5 

 mm long; anthers continuous, oblong, 2-celled, introrse, obtuse, 1.5 mm 

 long. Ovary 1-ccllcd; style 3 mm long; stigma minute. Fruit narrowly 

 ellipsoid, 8 mm long, with a single seed. 



Luzon, Province of Bcnguct, Mount Pulog, For. Bur. 1G220 Ciirran, Mcrritt, 

 d Zschokke, January 5, 1909, on trees in liardwood forests at an altitutfe of about 

 2,500 ni. 



A ])ccuiiar plant, with the habit, vegetative and many floral characters of 

 Loranlhus, remarkable for its cleistogamous flowers, the throat of the corolla- 

 tube being closed by a conical body formed of inward projecting and united portions 

 of the limb. It din"er3 from Lorunthus also in its very short, broadly triangular- 

 obovate, subtruncate and irregularly toothed, spreading corolla-lobes. 



