Descriptive Flora 



233 



in late summer and fall, and having large, thick, simple leaves 

 with blades that continue down the pithy stem giving it a winged 

 appearance. Leaves simple alternate. Blades 2 to 8" long, 

 lanceolate or oval or ovate, rough, coarsely toothed, heavily 

 veined beneath. Blossoms heavy, wide-topped, greenish-white 

 clusters. Flowers composite. Rays 4 to 10, short, white, about 

 %" long. Disk greenish, mounded, about %" across. Fruit 

 flattened, white-winged, obovate achenes with two awns at the 

 top. Shaded waste land and moist banks of streams. Mr. G. 

 Schmeltzer reports that this is the marahiuina, to which the 

 Mexicans become addicted to smoking much as the Chinese do 

 opium. 



Calyptrocwrpus tampioanus (DC.) Small. Straggler Daisy. 

 (Calyptrocwrpus vialis Less.) 



Low plants with spreading or creeping branches and tiny 

 yellow flowers solitary in the axils of the upper or terminal pair 

 of leaves. Leaves simple, opposite. Blades ovate, about 1 inch 

 long. Flowers composite, less than y£ across, the disk flowers 

 usually 5, the small ray flowers 5 to 11. A common houseyard 

 weed that threads the grass, often covering spots under mesquite 

 and hackberry where the grass does not do well. Blossoms 

 equally well in summer and winter. 



Coreopsis drummondii (Don) Torr. & Gray. Tickseed. 



Coreopsis. "Manzanilla silvestre , \ 

 Tall, slender-branched plants with grooved stems and yellow 

 flowers each having a brown or dark red center and 8 yellow 

 rays that are purplish-brown or dark red at the base. Leaves 

 simple, opposite. Blades divided into several narrowly-oblong 

 lobes. Petioles conspicuously hairy at the base. Flowers com- 

 posite, % to \y<£ across, singly terminating long, slender 

 peduncles. Bracts of the involucre in two rows, the outer 8 long, 

 narrow, 8-10 mm. long, spreading but united at their bases, the 

 inner 8, broader, ovate, as long or nearly as long as the outer, 

 purplish-red, membraneous, usually with recurved tips. Achenes 



