WOOD SORREL FAMILY 39 



ERODIUM L'Heritier 1807 STORKSBILL, ALFILARIA 



(Gr. erodios, heron, from the form of the fruit) 



PL 7, fig. 5. 



Sepals 5, petals 5, pink or rose-purple, the upper 2 smaller, stamens 5, 

 alternating with 5 sterile filaments, ovary 5-lobed, stigmas 5, lobes of the 

 fruit 1-seeded, separating, styles hairy on the inner side; flowers in umbels; 

 leaves pinnate, the leaflets finely cut; annual. 

 Stems spreading, 2-8 in. high ; flowers 6-12 mm. 



broad. E. cicutdrium 



GERANIUM Linne 1753 GERANIUM, CRANESBILL 



(Gr. geranos, crane, from the form of the fruit) 



PL 7, fig. 6. 



Sepals 5, petals 5, white to red or purple, stamens 10, in 2 rows, ovary 

 5-lobed, stigmas 5, lobes of the fruit 1-seeded, remaining united by the tips 

 of the styles, the latter not hairy on the inner side; flowers solitary or 

 clustered ; leaves palmately 3-9-divided. 



1. Petals bright pink, red or purple; plant more 



or less glandular hairy ; typically in moist soil G. caespitosum 



2. Petals white or pinkish ; plant more or less 



glandular hairy ; typically in dry soil G. Richardsonii 



OXALIDACEAE WOOD SORREL FAMILY 



Sepals 5, petals 5, yellow, rose-purple or white, stamens 10, in two 

 lengths, united at base, ovary 5-celled, styles 5, fruit a capsule, splitting 

 lengthwise, flowers in cymes ; leaves alternate, often basal, of three leaflets ; 

 annual or perennial, often stemless, herbs with an acid sap. 



OXALIS Linne 1753 WOOD SORREL 



(Gr. oxalis, sorrel, from oxys, sour, from the sap) 



PL 7, fig. 2. 



Characters of the family. 



1. Flowers yellow; stems leafy, 1-12 in. high; fruit 



cylindric O. stricta 



2. Flowers rose-purple, or whitish; stems leafless, 



3-10 in. high; fruit ovoid O.iioldcea 



