CACTACEAE (CACTUS FAMILY) 



21 OPUNTIALES. Cactus Order. 



i CACTACEAE. Cactus Family. 

 i CfcREUS. 



1 a Stem 8-12 ribbed or angled; flowers 2-3 in. long, crimson 



RAT-TAIL CACTUS. (C. fiagelliformis*) 

 b Stem 3-7-angled ; flowers 4-7 in. long, usually white 



NIGHT-BLOOMING CEREUS. (C. nycticalus.*) 



2 OPtJNTIA PRICKLY PEAR. (O. opuntia*) 



3 EPIPHfLLUM CHRISTMAS CACTUS. (E. truncatum*) 



22 THYMELEALES. Mezereon Order. 

 i THYMELEACEAE. Mezereon Family. 



1 DAPHNE SPURGE LAUREL. (D. mezereum*) 



2 DlRCA MOOSEWOOD. (D. palustris.) 



2 ELAEAGNACEAE. Oleaster Family. 

 i LEPARGYRAfcA. 



1 a Leaves green above, silvery beneath 



CANADIAN BUFFALO-BERRY. (L. canadensis.*) 

 b Leaves silvery-scurfy on both sides 



BUFFALO-BERRY. (L. argentea.*) 



2 ELAEAGNUS OLEASTER. (E. angustifdlia.*) 



3 HIPP6PHAE SEA BUCKTHORN. (H. rhamnoldes*) 



23 MYRTALES. Myrtle Order, 

 i LYTHRACEAE. Loosestrife Family. 



1 ROTALA ROTALA. (R. rambsior.) 



2 DECODON SWAMP LOOSESTRIFE. (D. verticillatus.) 



3 L^THRUM SPIKED LOOSESTRIFE. (L. salicaria*) 



4 PARS6NSIA. 



i a Plant cultivated ; flowers about i in. long, scarlet 



CIGAR PLANT. (P. ignea.*) 

 b Plant not cultivated; flowers about }4 in. long, purple 



BLUE WAX-WEED. (P. petiolata.) 



2 MELASTOMACEAE. Meadow Beauty Family. 

 i RHEXIA MEADOW BEAUTY. (R. virginica.) 



3 ONAGRACEAE. Evening Primrose Family. 



1 ISNARDIA MARSH PURSLANE. (L palustris.) 



2 LUDWfGIA. 



i a Flowers about ^4 in. broad, greenish ; capsule globose 



GLOBE-FRUITED LUDWIGIA. (L. sphaerocarpa.) 

 b Flowers %-% in. broad, yellowish; capsule 4-angled 



SEED-BOX. (L. alternifblium.) 



3 CHAMAENfeRION GREAT FIRE-WEED. (C. angustifblium.) 



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