PURSLANE FAMILY 49 



(1) Petals 2 ; stamen 1 Calyptridium 



(2) Petals 4 ; stamens 3 Spragui 



c. Stigmas 4-6; flowers yellow Portula* \ 



2. Sepals 4-8 Lewisia 



Calyptridium Nuttall 1838 

 (Gr. kalyptra, cap, -idiitm, little) 



Sepals 2. usually persistent, petals 2, rose, minute, stamens 1, ovary 

 1-celled, stigmas 2, capsule 2-valved ; flowers in axillary or terminal spikes; 

 leaves alternate; annual. 

 Stems weak, 2-5 in. long; leaves oblong-spatulate C.roscum 



Claytonia Linne 1753 Spring Beauty 



( Named for Clayton, an American botanist) 

 PI. 9, fig. 11-12. 



Sepals 2, persistent, petals 5, white, rose or yellow, stamens 5, on the 

 petal bases, ovary 1-celled, stigmas 3, capsule 3-valved ; flowers in terminal 

 clusters ; leaves opposite or alternate ; annual or perennial. 



1. Basal leaves spatulate in a dense rosette, from a 



fleshy tap root; at 10-14000 ft. C.megarrhiza 



2. Basal leaves few, single or none, linear to lance- 



oblong ; at 5-9000 ft. 



a. Stems from a bulb-like corm C. lanceolata 



b. Stems not arising from a corm. often with 



runners or rooting at the joints C. Chamissoi 



Lewisia Pursh 1814 Bitter-root 

 ( Named for Lewis, of the Lewis and Clarke expedition) 



Sepals 4-8, unequal, persistent, petals 8-16, rose to white, stamens 

 many, ovary 1-celled. style' deeply 3-8-cleft, capsule splitting circularly: 

 flowers single; leaves in a dense rosette; perennial. 

 Stemless : leaves linear to spatulate, 1-3 cm. long; 



flowers 1-2 in. wide L. rediviva 



Oreobroma Howell 1893 Oreobroma 



(Gr. oreos, mountain, broma, food) 



PI. 9, fig. 13. 



Sepals 2, persistent, petals 5-10, red, pink or white, stamens more than 

 5, ovary 1-celled, style 3-7-cleft, capsule opening" circularly ; flowers soli- 

 tary or few in a cluster; leaves linear to spatulate; perennial. 



