66 KEY TO NATURAL ORDERS 
ORDER XIV—MYRTALES—ORrpDER OF THE MyRTLES 
(Page 418) 
Calyx attached to the ovary or the latter is free. Ovules are numer- 
ous. Petals present except in one family of aquatic plants. 
139. 140. I4I. 142. 143. 144 145. 146. 
139. Buffalo Berry. 140. Lythrum. 141. Flower of Rhexia. 142. Flower of 
Ludwigin. _143. Flower of Epilobium, 144. Flower of Evening Primrose. 145. 
Flower of Enchanters Nightshade. 146. Spray of Myriophyllum. 
OrDER XV—UMBELLALES—Orper or THE CARROT 
(Page 434) 
Herbs, shrubs or trees. Flowers in umbels or umbel-like heads. 
Ovary surrounded by the calyx, each cell of the ovary containing a 
Single ovule. Stamens equal in number with the petals and alternate 
with them. 
150. eX. 
147. 
147. Umbel of Aralia. 148. Umbel of Wild Carrot. 149. Umbel of Bupl 
150. Hydrocotyle. 141. Umbel of Cornus, 4 ee 
(For Key to the Orders of Sub-Class Il—Sympetalous or 
Monopetalous Exogens—See Page 456.) 
