KHINANTHACEAE 1053 



much shorter than the tube : corolla smaller than that of M. spicafum, the lower lip not 

 much larger than the upper, the middle lobe concave : longer filaments glabrous. 

 In sand or sandy soil, Florida. Also in tropical America. Spring to fall. 



5. Mesosphaerum spicigerum (Lam. ) Kuntze. Annual, pubescent. Stems erect or 

 ascending, 4-9 dm. tall, muricate-pubescent, especially on the angles : leaf-blades ovate, 

 oval or elliptic, 2-6 cm. long, acute, serrate, usually rounded at the oblique base, petioled : 

 clusters dense, contiguous, forming dense racemes : calyx 2 mm. becoming 4-5 mm. long, 

 minutely pubescent ; lobes filiform-subulate, shorter than the tube : corolla 3-4 mm. long, 

 finely pubescent, the upper lip of 2 ovate lobes, the lower lip with 2 spreading oblong 

 lateral lobes and a dipper-like middle lobe. \_Hyptia spicigera Lam.] 



In sand, southern Florida. Also in tropical America. Spring to fall. 



43. OCIMUM L. 



Annual or perennial herbs or shrubs, with branching stems. Leaves opposite : blades 

 often toothed. Flowers in axillary clusters, these disposed in racemes or panicles. Calyx 

 deflexed at maturity : tube ovoid to campanulate : lobes various, the upper broad, the 

 lateral narrower, the lower still narrower, more or less united. Corolla often white : tube 

 mostly shorter than the calyx : lobes nearly equal. Stamens 4 : filaments often distinct, 

 naked or with a tooth-like appendage or tuft of hairs. Nutlets smooth or slightly rugose. 

 Basil. 



1. Ocimum micrdnthum Willd. Annual, more or less pubescent. Stems erect, 

 2-5 dm. tall, branched : leaf-blades ovate or oblong-ovate, 1-4 cm. long, acute, serrate, 

 cuneate or nearly truncate at the base : panicles 2-10 cm. long, nearly continuous : calyx 

 2 mm. becoming 6-7 mm. long, minutely pubescent, the upper lip boat-like, the free por- 

 tion rounded, the lower lip of 4 subulate-tipped lobes : corolla often white, 4 mm. long : 

 tube abruptly dilated about the middle, tiie upper lip minutely bearded, of 2 rounded 

 ovate lobes, the lower lip with 2 ovate lateral lobes and a deeply notched middle lobe : 

 nutlets about 1 mm. long, granular. 



In sand, Florida. Also in the West Indies and South America. 



Family 13. RHINANTHACEAE J. St. Hil. Figwort Family. 



Herbs, shrubs or trees, with commonly terete stems. Leaves opposite, 

 sometimes whorled, or alternate, Avithout stipules : blades simple, entire, 

 toothed or divided. Flower.s perfect. Calyx free, of 4-5 more or less imbri- 

 cated united sepals, persistent. Corolla mostly irregular, commonly only 

 slightly so, generally 2-lipped, hypogynous. Androecium of 4 usually didy- 

 namous stamens and sometimes a fifth or also a .sixth one represented by a 

 sterile filament, all partially adnate to the corolla-tube, one pair of the usually 

 fertile ones sometimes suppressed. Filaments often appendaged. Gynoecium 

 of a single superior 2-celled pistil, the placentae united in the axis. Styles 

 united or rarely distinct. Fruit a 2-valved capsule or rarely baccate. Seeds 

 usually numerous. Endosperm fleshy or cartilaginous, surrounding the endo- 

 sperm. \_'^crophulariaceae Lindl.] 



A. Upper lip or lobes of the corolla external in the bud, or wanting (with exceptions in Mimulus). 

 Leaves prevailingly alternate. 



Herbs : corolla rotate : perfect stamens 5. 1. Verbascum. 



Shrubs: corolla funnelform or campanulate : perfect stamens 4. 2. Leucophyllum. 



Leaves prevailingly opposite. 



Corolla-tube with a spur, sac or swelling on the lower side near the base. 

 Corolla-tube with an elongated spur. 



Flowers axillary to leaf-like bracts and remote. • 3. Kickxia. 



Flowers approxiD:ate in terminal spikes : racemes or panicles. 4. Linaria. 



Corolla-tube with a sac or swelling. 



Throat of the corollaclosed by a palate: capsules opening by 2-3 pores. 5. Antirrhinum. 

 Throat of the corolla open, merely with 2 bearded lines or plates : 



capsules opening by transverse or irregular chinks. 6. Maurandia. 



Corolla-tube without either spur, sac or swelling on the lower side. 



Filaments 5, 4 anther-bearing, 1 sterile, more or less different from the 

 others. 

 Staminodium a scale, adnate to the upper side of the corolla-tube. 

 Corolla-tube shorter than the calyx, the lobes of the lower lip in- 

 duplicate. 7. Collinsia. 

 Corolla-tube longer than the calyx, thelobes of the lower lip flat. 8. Scrophularia. 

 Staminodium elongated. 



Filaraentslonger than the staminodium : seeds winged. 9. Chelone. 



Filaments shorter than the staminodium ; seeds wingless. 10. Pentstemon. 



Filaments 2 or 4. 



