516 PROCEEDINGS OF THE AMEBICAB ACADEMY. 



O O Lower faces of leaves anil nerves of calyces pubescent. 

 + Vertioela crowded into ;i dense Bpiciform raceme 5 to G cm. long: stem shrubby. 



77. s. pteboi i:\. Briq. Ann. Conserv. .lard. Uot. Gent \<-. ii. 189. 

 1 1 xibed from Costa Rica. 



+ + Verticels becoming remote. 

 X Branches slender, glabrate : calyx tubular-eampanulate, not enlarged above. 



78. S. Seemannii. Frutescent (?) : branches minutely pilose or gla- 

 brate, purplish ; leaves elliptic-ovate, acuminate at the tip and at base to 

 a Blender petiole 1.5 to 3.5 cm. long, sharply serrate, above sparse]) 

 appressed-setulose, beneath minutely so on the nerves or glabrate, I to 7 

 cm. long, 2 to 4 cm. wide: raceme 1 dm. or less in length; verticels 

 about G dowered, all a little remote, the lowest 1 cm. apart : bracts 

 purple, lance-attenuate, persistent, slightly exceeding the Betulose pedi- 

 cels, 2 to 4mm. long: calyx purple-tinged ; the tube barely twice exceed- 

 ing the lips; the upper lip broad-ovate, acuminate-subulate, the lowerwith 

 lance-ovate acuminate lobes: corolla 1 cm. or so long, the tube a little 

 exserted ; galea pilose, equalling the lip : style bearded. — S. flexuosa, 

 Seem. 1. c. not Presl ; Ilemsl. 1. c. 550, in part, with doubt. — North- 

 western Mexico, in the Sierra Madre (Seemann). 



X X Stems herbaceous, stout, densely puberulent in decussating bands : calyx 



slightly Baring above. 



79. S. fluviatilis. Stems 1.5 m. or less high, very quadrangular : 

 leaves rhombic-ovate, short-acuminate at tip, cuneate at base, crenate- 

 serrate, the upper 5 to 9 cm. long, the lowermost broader, Bubtruncate at 

 base, 1.5 dm. long, nearly as broad, puberulent above, especially on the 

 nerves, cinereous beneath; petioles cinereous-puberulent, the lowest ~> 

 cm. long, the others shorter: racemes slender, flexuous, the terminal 

 becoming 2 dm. long ; verticels 10-2<)-tlowered, the lower remote, the 

 lowest 1 cm. apart: bracts ovate, acuminate : pedicels filiform, becoming 

 2 to 3 mm. long: calyx green, strongly bilabiate, the tube twice i seced- 

 ing the lips; the upper lip ovate, acuminate, entire, the lower with 

 narrower attenuate lobes: corolla deep blue, pilose, 1 cm. long; the tube 

 Blightly exserted; galea about equalling the lip : style bearded. — Mo- 

 belos, by streams near Caernavaca, alt. 1,540 m., May 16, 1898 ( C. G. 

 JViiujle, no. 6850), Sept. 29, 1898 (A'. II'. A Holway, no. 3028). 



c. Calyx in anthesifl 7 to !• mm. long. 

 1. Stem and leaves glabrous . the latter 1 to 1.3 dm. long, serrate. 



80. S. ALYAJACA, Oerst. Vidensk. Meddel. 1853, 38; Ilemsl. I.e. 

 552. — Described from Costa Rica. No specimen seen. 



