liv GENERA. 



B. Sta. included in the tube of the corolla. 



654. MAE.E.UBIUM. Div. of Style filiform, nearly equal. Cal. with 10 furrows and 5 

 or 10 teeth. Upper Lip of Cor. straight, linear, cloven. Tube included in calyx, p. 295. 



655. SIDERITIS. Lower Div. of Style dilated at base, and embracing the upper, 

 p. 296. 



hi S. romana the tipper Tooth of the Cal. is much larger than the others ; in S. montana the 

 upper Teeth are partially united. 



Tribe TX. PRASIEM 



656. PKASIIJM. Cal. lO-nerved, irregularly 2-lipped: segments ovate, leaf-like. Tube 

 of Cor. included, vrith a scaly internal ring, shrubby, p. 296. 



Tribe X. AJUGEM 



657. TETJCKIUM. Upper Lip of Cor. divided to the base: tube short, without a ring. A 

 genus very various in general appearance, p. 296. 



658. AJUG-A. Upper Lip of Cor. minute, abrupt, emarginate. p. 297. 



II. ANGIOSPERMIA. 



All this order belongs to the PEUSONATiE of Linnceus, except Celsia, Digitalis, Limosella, and 

 Linnsea. The last-mentioned genus differs from all the rest in having an inferior germen. 



A. Seeds two or four ; connected, at least at first, by a common covering. 



B. Seeds many, on a central placenta. 

 i. Cells of Seed-vessel 2. 



a. Fl. nearly regular. 



b. El. ringent. Cal. 5 -cleft. 



c. El. ringent, reversed, with an accessory scale. Cal. 4-cleft. 



d. El. ringent, direct ; no Accessory Scale. Cal. 4-cleft. 

 ii. Cell of Seed-vessel single. 



C. Seeds many, on the valves. Cell single. 



D. Germen inferior ! 



A. Seeds 2-4 ; connected, at least at first, in a common covering. 



617. VITEX. Cal. with 5 teeth. Cor. 2-lipped : tube slender. Er. a drupe, containing 

 a 4-ceUed nut. VERBENACEiE. p. 282. 



618. VERBENA. Cal. of 5 teeth : one of them shorter. Border of Cor. in 5 slightly 

 unequal segments. Sta. included in the tube. Seeds 4, connected by an evanescent membrane. 

 Verbenacb^. p. 282. 



619. ZAPANIA. Cal. cloven. Cor. small, 2-lipped. Caps, of 2 cells, each with a 

 single seed. A loio marsh plant, with stalked heads of M. and large bracts. Verbenacejj;. 

 p. 282. 



616. ACANTHUS. Sep. 4, differing in form and size. Cor. of one lip, trifid. Er. 

 a capsule of 2 cells. Dissepiment contrary to valves. Placenta central. Acanthace^e. p. 282. 



612. MELAMPYRTJM. Cal. 4-cleft. Cor. ringent: upper lip folded back on margin ; 

 lower with three furrows. Sceophulariace^. p. 272. 



613. TOZZIA. Cal. 5 -cleft. Cor. salver-shaped: the Tube dUated upwards ; Div. nearly 

 equal. Germen with 2 cells and 2 ovules in each. Seed 1. Scrophulariace^. p. 273. 



597- SIBTHOE-PIA. Cal. with 5 deep spreading segments. Cor. rotate, irregularly 

 5-cleft. Caps, compressed. A very humble plant, with roimded L. ScROPHULARiACEiE. 

 p. 266. 



