448 THE STORY OF PLANT LIFE 



Sub-Family 2. Arbutoideae. 

 Tribe 4. AndromedecB. 



Genus. Andromeda. 

 Tribe 5. Arbutece. 



Genera. Arbutus^ Arctostaphylos. 

 Sub-Family 3. Vaccinioidese. 

 Tribe 6. Vacciniece. 



Genus. Vaccinium (including Oxy coccus) (Vol. II, 

 p. 316). 

 Sub-Family 4. Ericoideae. 

 Tribe 7. EricecE. 



Genera. ^/-^V^ (Introductory Vol, p. 153), Calluna. 



Order 2. Primulales. — Flowers 5 or rarely 

 4-partite to indefinite, typically diplostemonous, but 

 usually haplostemonous, with stamens opposite to 

 petals and epipetalous, hermaphrodite or unisexual, 

 usually actinomorphic ; petals rarely free ; ovary 

 superior to inferior, unilocular, with i to indefinite 

 ovules, on basal or free-central placenta. 



Family. Primulacese (Introductory Vol., p. 158; 

 Vol. II, p. 328). — Stamens opposite corolla-lobes ; style i ; 

 ovary usually superior ; ovules numerous ; fruit a capsule. 

 Tribe i. Androsacece. 

 Sub-Tribe i. Primulince. 



Genus. Primula (Introductory Vol., p. 162). 

 Sub-Tribe 2. Hottoniince. 



Genus. Hottonia (Vol. II, p. 332). 

 Tribe 2. CyclaminecB. 



Genus. Cyclamen. 

 Tribe 3. Lysimachiece. 



Sub-Tribe i. Lysimachiince. 



Genera. Trientalis, Lysimachia (Introductory Vol., 

 p. 160), 



