Trogia. 



67 



42. T. nigricans Bush in Small, Fl. Southeast. U. St. (<903) 702; in Missouri 

 Bot. Garden Rep. XVII. (1906) 122, in Fedde, Reperl. IV. (4 907) 21 4. — Perennis, in 

 sicco nigrescens. Caulis graciiis, erectus, 25 — 45 cm altus, simplex vei parce ramosus, 

 fere glaber. Folia 'i^j^ — l^l^^^ longa, Y2~272cm lata, crassiuscula, oblonga vei 

 oblongo-lanceolata, profunde dentata vei laciniata, interdum sublobata, apice et basi 

 acuta, breviter petiolata vei superiora sessilia, sublus glabra, supra in costa media et 

 margine pilis longis, albis obsita. Inflorescentiae axillares, breves, spiciformes, foliis 

 multo breviores, basi florem Q unicum vei 2 gerentes; bracteae lanceolalae, 1 '/j — 

 2^2 ^^ longae. Caljx q^ 3-lobus; stamina 3. Sepala Q. 6. Capsula breviter pe- 

 dicellata, depressa, 6 — 10 mm diametiens, dense pilis elongatis pubescens. Semina 

 globosa, 3 mm diametientia. 



Mittelamerikanisches Xerophytengebiet: Texas, am oberen Hondo (Re- 

 verchon n. 1594). 



Nota. Speciem non vidimus. — In diagnosi primaria stamina 4, postea 3 describuntur, 

 Species affinis videtur T. urenti. 



Fig. 13. Trcigia urens L. A var. linearis Michx. B var. innoeua (Walt.) Pax et K. Hoffin. 

 G Flos (5. — Icon. origin. 



43. T. urens L. Spec. pl. ed. 2. (1763) 1391; Michx. Fl. bor. amer. II. (1803) 

 175. — Leptohotrys discolor Baill. Etud. gen. Euphorb. (1858) 479, t. II, f. 17, 18.— 

 Tragia discolor Müll. Arg. in DC. Prodr. XV. 2. (1866) 946. ~ T. innoeua Chapm. 

 Fl. South. U. St. 3. ed. (1897) 429. — Gaules ad 40 cm alti, basi lignescenles, raraosi, 

 tenues, griseo-puberuli, striati, erecti vei adscendentes. Folia subsessilia, petiolo imo 

 ad 2 mm attingente, cuneato-obovata vei cuneato-lanceolata vei linearia, apice et basi 

 acuta, integra vei apicem versus grosse dentata, utraque pagina hispido-pubescentia; 

 stipulae 1 — 3 mm longae, trianguläres vei lanceolalae, acuminalae. Inflorescentiae oppo- 

 sitifoliae vei terminales, varia longitudine, 2 — 12 cm longae, pedunciilalae, filiformes, 

 basi flores Q 2 — 4, deinde (^ plures vei numerosos gerentes, puberulae; bracteae 



