AR WOODY PLANTS OF MASSACHUSETTS. 
Calyx adherent to the ovary. Berries eatable. 71. Whorrnrprrry 
Faminy. XX. 
[ Drupe berry-like, fleshy or pulpy, with 4—8 stones. 57. Ilotuy Fam- 
3" ry. XVI. 
37 4 Drape dry, 1-celled, I-seeded. Sumacu Faminy. XOCXIV. 
| Capsule 3-celled, 1 or 2-seeded. 78. 
Stamens 4—~5; anthers not opening by valves. 39. 
38 
Calyx free from the ovary. 62. Haars Faminy. XX. 
36 
Stamens 6; anthers opening by valves. Prickly shrubs. Barserry 
Faminy. XXXVIL. 
Tendril-bearing vines. Calyx obsolete. 76. THe Vine Faminy. XXX. 
39 ) Bree shrubs. Sepals united at base. 77. Bucx-Tsorn Famizy. 
XXXI. 
40 Stamens springing from the calyx. 41. 
Stamens springing from the receptacle or base of the flower. 42. 
Fruit a pome; calyx persistent. 73. Aprre Faminy. XXVII. 
Fruit neither a pome nor a drupe. 72. Rose Faminry. XXVI. 
Fruit a drupe; calyx deciduous. 74. Atmonp Faminy. XXVIII. 
{ Pistil and style one; flowers perfect, stamens in parcels. Linpen Fam- 
ny. XXXVI. 
Pistil and style one, flowers perfect, stamens not in parcels. 78, Rocx 
49 < Rose Faminy. XXXVI. 
Pistils about 2; only one ripening, forming alunate drupe; stcrilc and 
| fertile flowers on distinct plants. Moonsrep Faminy. XXXIX. 
Pistils many, united ina kind of cone; flowers perfect. 79. Macnotra 
{| Fasuny. XL. 
DIVISION INTO GENERA. 
43. Leaves in bundles or tufts, ina sheath. 44. 
Leaves sohtary. 45. , 
AA. Leaves 2—5 in a sheath, evergreen. Pine. I. 1. 
Leaves 15—60 in a sheath, deciduous. Larcu. I. 4. 
Ab. Leaves alternate. 46. 
Leaves imbricate, opposite or in whorls. 48. 
46. 
Fruit not fleshy. 47. 
Bark always rough. Spruce. I. 2. 
47.9 Bark smooth on young trees. Fir. I. 3. 
Leaves imbriecate ; branches fan-lke; cones ovate. Arnor Vira. I. 5. 
Leaves imbuicate ; cones angular, somewhat spherical. Wuuitr Cr- 
par. I. 6, 
| Leaves spposite, or in whorls; cones berry-like. Rep Czpar and Juntr- 
POR. 
48. 
: 
$ Prait fleshy. Yew. I. 8. 
| 
[ Cup scaly or warty, not covering the acorn. Oax. JI. 1. 
AQ. Q Cup a prickly bur, covering the 3-cornered nut. Buren. II. 2. 
“\ Cup a prickly bur, covering the roundish nut. CHESTNUT. iI. 3. 
L Cup leathecy, hairy, covering the nut. Hazen. II. 
nO § Nat in the axil or angle of a leaf-like bract. Hornpram. TI. 1 
Nat enveloped ina hairy, inflated sack. Hop Horneram TIT. 
