36 SPRING FLOWERS. 



28. Scrophulariaceous Plants. SCROPHULARIACE^. 



(09) Scrophularia corolla small, nearly globular, with five un- 

 equal lobes ; stamens four, often with rudiment of a fifth. 



29. Orobanchaceous Plants. OROBANCHACE^E. 



(70) Lathrsea calyx bell-shaped, with four broad short teeth : 



upper lip of the corolla helmet-shaped. 



30. Labiate Plants. LABIATE. 



* Two upper stamens longer than the two lower. 



(71) Nepeta calyx tubular, fifteen-ribbed ; upper lip of the long- 



tubed corolla straight, notched. 



** Two upper stamens shorter than or on 1\j equaling to the lower. 

 t Corolla distinctly ttvo-lipped. 



(72) Lamium calyx regularly five-lobed ; stamens longer than 



the corolla- tube. 



ft Corolla apparently one-lipped. 



(73) Ajuga upper lip of corolla minute, tooth-like, entire or 



notched. 



31. Thymelaceous Plants. THYMELACE.E. 



(74) Daphne perianth four-cleft, often coloured ; stamens eight. 



32. Ulmaceous Plants. ULMACE.E. 



(75) Ulmus perianth bell-shaped, with four to six short lobes, 



and as many stamens. 



33. Aristolochiaceous Plants. ARISTOLOCHIACE.E. 



(76) Asanun perianth bell-shaped, regular, three-cleft ; stamens 



twelve. 



