334 GLOSSARY. 



Phyllotax'is. Leaf-arrangement. 126. 



Pi'leus. A cap. The head of a fungus. 183. 



Pin'na. A leaflet of a pinnate leaf. 13. 



Pin'nule. One of the subdivisions "of a pinna. 



Pis'tillate. Having a pistil but no stamens. 45. 



Pistillid'ia. The pistil-like organ of cryptogamia. 180. 



Placen'ta. That part of the ovary which bears ovules. 95. 



Plu'mule. The first bud of a growing plant. 119. 



Pollen. The powdery contents of anthers. 88. 



Pollin'ia. Pollen-grains cohering in masses. 89. 



Polyadelphous. Having the filaments grown together in three or 

 more bundles. 51. 



Polyan'drous. Having more than twelve stamens. 49. 



Polyg'amous. Having pistillate, staminate, and hermaphrodite flow- 

 ers on the same plant. 47. 



Polysep'alous. With distinct sepals. 48. 



Pome. A fleshy, indehiscent, many-celled fruit, no. 



Pri'mine. The outer sac of an ovule. 104. 



Protecting organs (of flowers). The calyx and corolla. 45. 



Pubes'cent. Having fine short hairs or down. 



Pyxis. A pod which dehisces by the falling off of a sort of lid. 



II3- 

 Raceme'. A flower-cluster of one-flowered pedicels along a rachis. 



31. 



Rad'icle. Belonging to or coming from the root. 119. 



Raphe. The connection between the base of the nucleus and of the 

 ovule. 104. 



Ray florets. The outer petal-like florets of a flower-head. 141. 



Receptacle. The top of the peduncle supporting the flower or flower- 

 head. 67. 



Reflexed. Bent outward or backward. 



Regular. Having all the like parts of the same size and form. 38. 



Reniform. Kidney-shaped. 10. 



Retic'ulated. Resembling net-work. 



Retuse'. Blunt and slightly indented. 7. 



Rev'olute. Rolled backward. 22. 



Rhizo'ma. An underground stem. 26. 



Rib. A part of the framework of a leaf. 2. 



Rin'gent. Gaping open. 



Root-stock. Root-like parts of stems on or under the ground. 



Rosa'ceous. Having petals like a rose. 



Ro'tate. Wheel-shaped. 



Rugose'. Wrinkled. 



