474 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
Order 38. UMBELLALES. 
KEY TO THE FAMILIES. 
Fruit dry, a cremocarp; gynecium 2-carpellary; stig- 
mas terminal........--..-...---.--2----+2---- 104. APIACEAE (p. 475). 
Fruit drupaceous or baccate; gynoecium 1 to several- 
carpellary, if 2-carpellary the stigmas introrse. 
Ovule with a dorsal raphe; leaves mostly oppo- 
site, the blades entire or merely toothed. .102, CORNACEAE (p. 474). 
Ovule with a ventral raphe; leaves mostly alter- 
nate, the blades compound................ 108. HEDERACEAE (p. 475). 
102. CORNACEAE. Dogwood Family. 
Trees or shrubs with simple, entire, mainly opposite, exstipulate leaves and perfect 
or unisexual flowers in spikes or cymes; calyx lobes minute; petals and stamens 4, 
epigynous; ovary inferior, becoming a | or 2-seeded drupe or berry, sometimes dry at 
maturity. 
KEY TO THE GENERA. 
Flowers perfect, cymose; leaves deciduous................-+-- 1. Cornus (p. 474). 
Flowers dicecious, spicate; leaves evergreen................. 2. GARRYA (p. 474). 
1. CORNUS L.. Cornet. 
Shrub 1| to 2 meters high with reddish branches; leaves elliptic-ovate, entire, short- 
petioled, thin, deciduous; flowers white, perfect, in flat-topped cymes, without 
involucres; fruit white. 
1. Cornus instolonea A. Nels. Bot. Gaz. 53: 224. 1912. 
Svida stolonifera riparia Rydb. Bull. Torrey Club 31: 573. 1904. 
Typ Locaniry: Crystal Creek, Colorado. 
Ranae: Alaska and Montana to Arizona and Nebraska, 
New Mexico: Cedar Hill; Tunitcha Mountains; Chama; Santa Fe and Las Vegas 
mountains; Zuni; Sandia Mountains; Mogollon Mountains; White and Sacramento 
mountains. Along streams and in wet ground, in the Transition Zone. 
The leaves of the shrub vary in outline from broadly ovate and abruptly short- 
acuminate to lanceolate and long-acuminate, and the base may be either broadly 
rounded or somewhat narrowed. 
2. GARRYA Dougl. 
Evergreen shrubs from 50 cm. to over 3 meters high, with elliptic to ovate, entire, 
short-petioled, coriaceous leaves and dicecious flowers in loose drooping axillary 
spikes; petals wanting; calyx 4-merous in the staminate flowers, with 4 stamens, 
2-lobed or obsolete in the pistillate flowers; ovary l-celled, with 2 persistent styles; 
fruit a blue black berry 5 mm. in diameter or less, becoming dry. 
KEY TO THE SPECIES, 
Mature leaves glabrous; plants mostly 2 to 3 meters high.......... 1. G. wrightii. 
Mature leaves densely pubescent; plants low, usually less than 1 
meter high..........-..222.- 02-22 eee eee eee eee eee 2. G. goldmanii. 
1. Garrya wrightii Torr. U. 8. Rep. Expl. Miss. Pacif. 4: 136. 1856. 
Type Locatity: Copper Mines, New Mexico. Type collected by Wright (no. 1789). 
Rance: Western Texas to Arizona. 
New Mexico: Mogollon and Magdalena mountains, to the Organ and White moun- 
tains and southward. Dry hills and canyons, in the Upper Sonoran Zone. 
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