534 



GERANIACEAE (GERANIUM FAMILY) 



7. 0. corniculata L. (LADY'S SORREL.) Erect or decumbent, apparently 

 flowering the first year but perennial by numerous slender pale runners ; leaflets 



green or often purplish ; pedicels 

 subumbellately or at length cy- 

 mosely arranged at the summit of 

 the peduncle, ascending, sparingly 

 pubescent, the hairs spreading; 



Y\ petals yellow. (0. cymosa, Bushii, 



& rufa Small ; 0. stricta of many 



802. O. corniculata. 



auth., not L.) Dry or moist open soil, a 

 very common weed. (Eu.) FIG. 802. 



8. 0. rdpens Thunb. Stems several, pros- f ' ? 



trate and creeping, the numerous erect g()3> Q ens> 



branches low, seldom 1 dm. high ; leaflets 



small ; flowers small, 2-5 on very short at length de/texed pedicels. (O. corni- 

 culata of L., in part, and of many later authors.) A weed, chiefly in and 

 about greenhouses. (Cosmopolitan.) FIG. 803. 



GERANlACEAE (GERANIUM FAMILY) 



Plants with perfect regular 5-merous hypogynous flowers. Sepals imbricated 

 in the bud, persistent. Glands of the disk 5, alternate with the petals. Stamens, 

 counting the sterile filaments, as many or commonly twice as many as the sepals. 

 Ovary deeply lobed; carpels 2-ovuled, l-seeded, separating elastically with their 

 long styles, when mature, from the elongated axis. Cotyledons plicate, incum- 

 bent on the radical. Our species herbs with lobed or divided stipulate leaves, 

 and astringent roots. 



1. Geranium. Stamens with anthers 10, rarely 5. The recurving bases of the styles or tails of 



the carpels in fruit naked inside. 



2. Erodium. Stamens with anthers only 5. Tails of the carpels in fruit bearded inside, often 



spirally twisted. 



1. GERANIUM [Tourn.] L. CRANESBILL 



Stamens 10 (rarely 5), all with perfect anthers, the 5 longer with glands at 

 their base (alternate with the petals). Styles smooth inside in fruit when they 

 separate from the axis. Stems forking. Peduncles 1-3-flowered. (An old 

 Greek name, from ytpavos, a crane; the long fruit-bearing beak thought to 

 resemble the bill of that bird.) 



Perennials with stoutish caudex and tough fibrous roots. 

 Petals more than 1 cm. long. 



Pedicels puberulent but not glandular ; petals light purple 



Pedicels glandular-puberulent ; petals deep purple 

 Petals less than 1 cm. long. 



Sepals strongly awned ; flowers mostly solitary 



Sepals merely pointed ; flowers in pairs .... 

 Annuals or biennials ; flowers small ; petals not over 1 cm. long 

 Petals about 1 cm. long, twice the length of the sepals. 



Petals entire ; leaves ternately dissected 



Petals deeply retuse ; leaves palmately lobed 

 Petals less than 1 cm. long, 1-1% times the length of the sepals. 



Fertile part of the carpel pubescent. 



1. G. maculatum. 



2. G.pratense. 



8. G. sibiricum. 



5. G. pyrenaicum. 



4. G. Robertianum. 



5. G. pyrenaicum. 



