70 ARTIFICIAL KEY TO FAMILIES 
19. Veinlets of leaves in form of a net-work. (32) 
Sy) Neg) Trillium, in CONVALLARIACEAE. Pg. 138 
A9sVeilets, not. in’ form! of ja, Det=-worke-ae mene ern care 
20. Flowers in umbels, leaves and stem arising from a bulb . . 21 
POs blowers Not in mpels! ois) .smeec ae oiare Onan CH teem nn oe 
21. Perianth adherent to the ovary . . . AMARILLIDACEAE. Pg, 141 
21. Perianth not adherent to the ovary. (34) . Ariiacear. Pg. 130 
22. Climbing vines. (35) . ... .- + » DIOSCORIACEAE.. Pg. 142 
. 22, Plants not vines . : 5 ae fr oe es 
23. Styles 3, distinct. (36) . . . . +. MELANTHACEAE. Pg. 125 
23. Style 1 em os  aatew Os 24 
24. Fruit a fleshy berry. (37) . . . . CONVALLARIACEAE, Pg. 134 
24. Fruit a capsule splitting lengthwise. (38) . LitiAcear. Pg. 124 
36. 37 
CLASS II 
DICOTYLEDONS, OR EXOGENS 
a. FLOWERS WITHOUT PETALS, 25 
6. FLOWERS WITH SEVERAL PETALS, 54. c. FLOWERS WITH UNITED 
PETALS, 119 
Sh rrees, @hrubs or indershrubs . 9. 2 2) 3 ewes = ee 
GIs TSIGid tte Ue Rae RE oR ER a ac ee 
Trees, shrubs and undershrubs 
26. Flowers in catkins or catkin-like heads. (39, 40) . . . . 27 
26. Flowers not in catkins nor eatkin-like heads . 33 
27. Leaves compound, feather-formed (pinnate). (41) 
St! LEE cor eT hae JUGLANDACEAE. Pg. 178 
P7eTcaves simple (ae). cP ia ake Lt NE, TE gies ee 
28. Parasitic shrubs, on other trees; fruit a berry 
Ph oS ee ghee A SPAN SY, ane LORANTHACEAE. Pg. 198 
zg. Trees and shrubs, not parasitic. . . . - - . +. + 2 
