30 SPRING FLORA OF MANHATTAN. 



MACROCALYX, Trew. 



Corolla small, bell shaped. Placentae meeting in the axis so as to 

 make the ovary appear 2-celled. 



M. Nyctelea, (L.) Kuntze. A low branched annual with pinnately 

 parted leaves and nearly white flowers solitary in the forks or opposite 

 the leaves. Low woods, common. 



55. ASPERIFOLIAE. 



As in the foregoing orders but ovary 4-lobed around the base of the 

 single style, separating at maturity into 4 seed-like nutlets Hairy herb s 

 with alternate, entire leaves and flowers in one sided racsmes cotlel at 

 the tip. 



CYNOGLOSSTJM, L. 



Throat of corolla closed by 5 obtuse scales. Nutlets armed all over 

 with short barbed prickles 



(7. officinale, L. Corolla dull red Lower leaves petioled, upper 

 sessile. Waste places, frequent. 



LAPPULA, Moench. 



Much as in Cynoglossum but nutlets armed only on the back or edges. 



L. pilom, (Nutt ) An erect, diffusely branched, hispid annual, with 

 narrow leaves and small, pale blue flowers Nutlets armed with a single 

 row of prickles on margin. Dry hills, common. 

 LITHOSPERMUM, L. 



Throat of corolla more or less closed. Nutlets whitish, bony, smooth 

 or roughish. Ours with deep perennial roots. 



L. angustifolium, Michx A few dm. high, rough hairy. Leaves 

 linear. Flowers lemon yellow, with tube 2-4 times as long as calyx 

 Prairie, frequent 



L. canescens, (Michx.) Lehm. Soft hairy, low. Leaves oblong. 

 Corolla orange, tube only a little longer than calyx. Prairies, frequent. 



L Gmelini, (Michx.) Stem taller (hi m.), rough hairy. Leaves 

 oblong to linear. Corolla orange, tube short. Dry hills, frequent. 

 ONOSMODIUM, Michx. 



Corolla tubular, throat open, lobes triangular, scarcely opening. 

 Nutlets bony. 



O. molle, Michx. About 1 m. high, coarsely hairy. Leaves ellptical, 

 strongly ribbed. Flowers whitish, with much exerted style. Prairie, 

 common. 



56. VERBENACEAE. 



Flowers irregular. Stamens 4. Ovary 2-4-celled, splitting at matur- 

 ity into as many nutlets. Leaves opposite. Ours all herbs. 



VERBENA, L. 



Calyx tubular. Corolla 5-lobed, salver-form. Flowers in spikes. 



V. Aubletia, L. Stem low. Leaves ovate, incisely lobed. Corolla 

 pinkish, 1-1£ cm. broad. Spikes depressed, elongating in fruit Bracts 

 narrow. Prairie, frequent. 



V. bracteosa, Michx. Procumbent. Bracts large, pinnatifid Flowers 

 blue, small, shorter than the bracts. Prairie, common. 



