24 



FOUNDATIONS OF BOTANY 



Fio. 4. — Inflorescence, Flower, and Seed, of a Sedge. 

 (Great Bulrush, Scirpus lacustris.) 



A, magnified flower, surrounded by a perianth of hypogynous bristles ; B, the 

 seed ; C, section of the seed, showing the small embryo enclosed in the base 

 of the endosperm. 



I. ARIS.ff:MA, Martius. 



Perennial herbs, springing from a corm or a tuberous 

 rootstock. 



Spathe rolled up at base. Summit of spadix naked, the 

 lower part flower-bearing ; staminate flowers above, pistil- 

 late ones below. Stigma flat ; ovary 1-celled ; berry 1-few- 

 seeded. 



