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ringent. Lip adnate to the column, serrate at 

 base, 3-lobed; lateral lobes very small. Col- 

 umn semi-terete. — 21. Aphyllous and without 

 chlorophyll; flowers in spikes. 



1. C. MULTIFLORA Nutt. Flowers calcarate; 

 sepals greenish; lip white, dotted with red. — 

 Crystal Springs. San Mateo. San Francisco 

 [extinct]. Summer. 



2. C. BiGELOVii Watson. Spur 0, sepals 

 purple. — Tamalpais. Summer. 



5. Cypripedium L. Lady's Slipper, 



Anthers 2. Lip inflated. — 21- Flowers few 

 or solitary. 



1. C. MONTANUM Dougl. Scpals brownish; 

 lip pale, veined with purple. — Santa Cruz 

 Mountains. Summer. 



Order 2. EPIGYN^. Stamens free, 3 or 6. 

 Ovary inferior. 



Family 1. IRIDACE^. 



Stamens 3, opposite to the external segments 

 of the perigonium; anthers extrorse. 



1. Sisyrinchium L. Blue-kyed Grass. 



Divisions of the perigonium equal. Sta- 

 mens monadelphous. Style short; stigmas 3, 

 filiform, involute, alternate with the stamens. 

 Fruit a capsule, obovate. 



