580 



Obtust , blunt or rounded. 



One-sided raceme, with the flow- 

 ers all turned to one side; one- 

 sided fruit, unequal-sided, etc. 



Opposite leaves or branches, two 

 from each node, proceeding 

 from opposite sides of the 

 stem; "stamens opposite pet- 

 als," when the stamen is set 

 before the petal. 



Orbicular, round or roundish. 



Orthotropous ovule, a straight 

 ovule, one not inverted on its 

 stalk. 



Palea, chaif-like pappus borne on 

 the achenes of the Sunflower 

 Family; in the Grass Family 

 th,e upper of the two modified 

 leaves subtending an individual 

 flower. 



Palmate leaf, with the leaflets 

 all borne at the apex of the 

 common petiole, or with the 

 divisions or sinuses of the leaf 

 pointing to the petiole. 



Palmatiftd, cleft so as to re- 

 semble the outstretched fingers 

 of the hand. 



Palnstrine. living in a marsh or 

 swamp. 



Panicle, a compound flower clus- 

 ter, a raceme or corymb which 

 is compounded by branching. 



Papillate, bearing minute nipple- 

 shaped protuberances. 



Pappus, the modified calyx-limb 

 borne on the achenes of the 

 Sunflower Family, usually oc- 

 curring as bristles, naked or 

 plumose hairs, scales or chaff. 



Parietal placenta, a placenta 

 borne on the wall of the ovary 

 or fruit. 



Parted, cleft nearly but not quite 

 to the base, or to the midrib. 



Pectinate, cleft into closely set 

 divisions like the teeth of a 

 comb. 



Pedate, palmately divided with 



the lateral divisions 2-cleft, 

 thus resembling a bird's foot. 



Pedicel, stalk or stem of a flower 

 in a flower-cluster. 



Pedicellate, having or possessing 

 a small or short pedicel. 



Peduncle, stalk or stem of a 

 flower or flower-cluster. 



Pedunculate, having a peduncle. 



Peltate, round, with stalk or peti- 

 ole attached on the under side 

 at the middle. 



Penicillate, with a tip or cluster 

 of fine hairs or bristles. 



Perfect, having both stamens and 

 pistils in the same flower. 



Perfoliate, where a stem seems to 

 pass through or pierce a leaf. 



Perianth, the floral envelopes 

 consisting of calyx or corolla 

 or both; applied here chiefly 

 to those flowers in which 

 there is no marked differentia- 

 tion into calyx and corolla. 



Perigynous, inserted on the calyx. 



Persistent, falling away very 

 tardily or not at all. 



Personate, when the bilabiate 

 corolla has a very prominent 

 palate or elevation in the 

 throat. 



Petal, one of the parts or di- 

 visions of a corolla, usually 

 colored. 



Petiole, the stalk of a leaf. 



Petiolule, the stalk of a leaflet. 



Pi a uate, with the leaflets ar- 

 ranged along each side of a 

 common petiole. 



Pinnatvfid, cleft in a pinnate 

 manner. 



Pistillate, provided with a pistil 



or pistils. 

 Placenta, that particular portion 



of the ovary wall which bears 



the ovules; it is sometimes 



strongly differentiated. 

 Plane, flat and even, without 



elevations or depressions; hero 



