Bulletin University of New Mexico—No. 49 
Manual of the More Common Flower- 
ing Plants Growing Without Cultiva- 
tion in Bernalillo County, New Mexico 

COMPOSITAE, (composiTE FAMILY) 
Flowers in a dense head surrounded by a leaf or scale- 
like involucre. Often of two kinds; showy marginal 
(ray or ligulate flowers), and less cospicuous disk or 
tubular flowers. (1f there are no ray flowers the 
head is said tc be dise +4.) Ovary one-ovuled, 
1-seeded, becoming an achene, usually surmounted by 
the calyx, called pappus, consisting of scales or hair- 
like (capillary) bristles. Some times there are scale 
or leaf-like bracts among the flowers-chaff. 
TRIBE 1. EUPATORIACEAE---Heads discoid, Flowers 
never yellow, 
Involucral bracts not herbaceous, in several series, 
nerved conspicuously when dry, (1) BRICKELLIA. 
Involucral bracts somewhat herbaceous or partly color- 
ed, inconspicuously or not at all striate, leaves 
entire, Saeki ium ie oe) =) CO eam ereaye. 
TRIBE II. ASTEROIDEAE. Heads radiate or discoid; 
style-branches of fertile flowers flattened and with a 
distinct rough appendage; leaves mostly alternate 
and receptacle without chaff. 
*Ray-flowers yellow, sometumes none. 
