Part 2, 1921] RUBIACEAE 147 



3. Tontanea herbacea (Lam.) Standley. 



Coccocipsilum herbaceum Lam. Encyc. 2: 56. 1786. 

 Coccocipsilum re pens Sw. Prodr. 31. 1788. 



Stems stout or slender, densely pilose when young with short or long, appressed or ascend- 

 ing hairs; stipules linear-subulate, 2-6 mm. long; petioles usually slender, 0.4-2.5 cm. long, 

 densely pilose with short or long, ascending or appressed hairs; leaf-blades broadly ovate, 

 ovate-oblong, or oblong, 1.8-5 cm. long, 0.8-3 cm. wide, rounded or obtuse at the base, often 

 short-decurrent, obtuse or acutish at the apex, sparsely or densely pilose above with short 

 appressed yellow hairs, paler beneath, short-pilose, often densely so, with subappressed, 

 mostly yellow hairs; heads usually sessile, sometimes partly short-pedunculate, mostly 2-3- 

 flowered; bracts linear-subulate, 3-4 mm. long; calyx and hypanthium densely appressed- 

 pilose, the calyx-lobes linear-subulate, 2-3 mm. long, twice as long as the hypanthium or longer; 

 corolla blue, 5-7 mm. long, short-pilose, the lobes lance-oblong, obtuse or acute, about half 

 as long as the tube; fruit 5-6 mm. in diameter, bright-blue, short-pilose; seeds dark-brown, 

 about 1.2 mm. broad. 



Type locality: Jamaica. 



Distribution: Greater Antilles; Guatemala to Colombia. 



Illustration: P. Br. Hist. Jam. pi. 6, J, 2. 



4. Tontanea hispidula Standley, sp. nov. 



Branches slender, pilose with stiff, whitish, appressed or ascending hairs; stipules subulate, 

 2-3 mm. long; petioles slender, 0.5-1.2 cm. long, pubescent like the stems; leaf-blades broadly 

 ovate, rounded-ovate, or oblong-ovate, 1.7-3.5 cm. long, 1-2.5 cm. wide, rounded at the base 

 and short-decurrent, acutish to rounded at the apex, hispid above with long slender yellow 

 hairs, paler beneath, sparsely or densely hispid; heads mostly sessile, sometimes very short- 

 pedunculate, the bracts linear or subulate, 3-4 mm. long; calyx and hypanthium hispid, the 

 calyx-lobes linear, acute, 2-4 mm. long; corolla bluish-white, 7-9 mm. long, sparsely hispid; 

 fruit oval, 8-15 mm. long, sparsely hispid; seeds brown, about 1 mm. broad, densely tuberculate. 



Type collected at Chagres, Panama, 1850, A. Fendler 179 (U. S. Nat. Herb. no. 42058). 

 Distribution: Costa Rica and Panama. 



5. Tontanea guianensis Aubl. PI. Guian. 108. 1775. 



Bellardia repens Willd. Sp. PI. 1: 626. 1797. 



Tontanea repens Pers. Syn. PI. 1: 134, 1805. 



Coccocipsilum Tontanea H. B. K. Nov. Gen. & Sp. 3: 316. 1819. 



Bellardia Tontanea R. & S. Syst. Veg. 3: 205. 1818. 



Coccocipsilum nummular iifolium Cham. & Schlecht. Linnaea 4: 145. 1829. 



Stems stout, densely pilose or hirsute with long, spreading, yellowish or purplish hairs; 



stipules filiform-subulate, 2-5 mm. long; petioles usually stout, 0.5-3 cm. long; leaf-blades 



oval, oval-ovate, ovate, or rounded-ovate, 2.5-7 cm. long, 1.5-4.5 cm. wide, truncate to obtuse 



at the base, often short-decurrent, rounded to acutish at the apex, often apiculate, densely 



pilose on the upper surface with long and short, mostly appressed, yellow, whitish, or purplish 



hairs, scarcely paler beneath, often purplish, densely soft-pilose; heads usually 2-4-flowered, 



the peduncles 1-4 cm. long, the bracts linear, 3-7 mm. long; calyx and hypanthium densely 



pilose, the calyx-lobes linear, acute, 3-4 mm. long; corolla blue, 7-10 mm. long, copiously 



pilose, the lobes lance-oblong, about half as long as the tube; fruit blue, pilose, 6-11 mm. in 



diameter; seeds dark-brown, 1.2 mm. broad, minutely tuberculate. 



Type locality: Guiana. 



Distribution: Veracruz and Oaxaca, southward to Colombia and Brazil; Cuba and Jamaica. 



6. Tontanea hirsuta (Bartl.) Standley. 



Coccocipsilum hirsutum Bartl.; DC. Prodr. 4: 396. 1830. 



? Coccocipsilum cilialum Schlecht. & Cham. Linnaea 6: 414. 1831. 



Branches slender or stout, densely hirsute or hispid; stipules subulate, 3-6 mm. long; 



petioles 0.4-2 cm. long, hirsute; leaf-blades oval, oval-ovate, or broadly oblong-ovate, 2-5.5 



cm. wide, rounded at the base, often short-decurrent, rounded to acutish at the apex, often 



apiculate, hirsute or hispid above with long spreading yellowish hairs, scarcely paler beneath, 



