GLOSSARY. 



283 



UM'BEL. A flower-cluster having the 

 flower-stalks spread moderately from a 

 common point, forming a plane or con- 

 vex surface above. 



UMBELLIF'EK^;. 

 umbels. 



Plants blossoming in 



A kind of achenium with 

 thin, membranous pericarp, which is 

 sometimes dehiscent. 



VAG'INTJLE. The collar or sheath at the 

 base of a sporange-stalk. 



VALVE. One of the parts into which a 

 pericarp or an anther splits. 



YAL'VULAR. After the manner of a 



valve. 



VAL'VTJLAR (or EEGULAR) DEHIB'CENCE. 

 When the ovary splits into regular 

 pieces called valves. 



VENA'TION. The manner in which the 

 veins are arranged in a leaf. 



VEN'TRAL. Belonging to the anterior 

 part. 



VERBENA'CE^E. Plants of the Verbena 

 family. 



VE'RSATILE. Freely movable. 



VER'TICAL. From top to bottom ; length- 

 wise. 



VEX'ILLART ^ESTIVATION. (See JEs-n- 



VATION.) 



VIL'LOTJS (surface). Having very long, 



soft, erect, straight hairs. , 

 VIT'T,E. The oil-sacs in the fruit of the 



Umbelliferae. 

 VOL'VA. The outer wrappage of the 



young mushroom. 



WHORL. A ring of leaves, flowers, or 

 other organs around a stem. 



ZO'OSPORE. A spore of certain water- 

 plants which moves by means of vibra- 

 tile cilia. 



