AN EXPLANATION OF THE 



TECHNICAL TERMS IN BOTANY* 



ABORTIVE flower. Falling off without 

 producing fruit. 



Abrupt leaf. A term used only in pinnate 

 leaves, which are said to be abruptly pin- 

 nate, when they have neither leaflet, 

 nor tendril, or clasper, at the end. 



AcaULIS. Stemless ; without stem or stalk. 



Ace ROSE leaf. Linear and permanent; as 

 in pine, fir. 



Aci "ul.ar. Shaped like a small needle. 



AcinaCIFORM leaf. Fleshy, compressed ; 

 one edge convex and sharp, the other 

 straighter and thicker, resembling a sa- 

 bre, falchion, or scymitar. 



Acini. Granulations. Linneus appropri- 

 ates this term to tiie distinct component 

 parts of the fruit in mulberry, blackber- 

 ry, and raspberry. 



Acotyi.EBONOUS plants. Without cotyle- 

 dons or lobes to the seed : and conse- 

 quently not having any seminal leaves ; 

 as in the class cryptogamia. 



Acui.f.atcs. Prickly. 



Acui.eus. A prickle. 



Acuminate or sharp pointed. 



A'onatus. Adnate, adjoined, adhering, 

 fastened, fixed or growing to. 



Adprfs-us. see oppressed. 



Adscendens. See ascending. 



AbVERSOM folium (an adverse leaf). The 

 upper side turned to the south 



/Equalis Polygamia. (Equal pohgamy). 

 Tne name of the first order in the class 

 sy agenesia of Linneus' s system, contain- 

 ing those compound flowers, which have 

 all the florets hermaphrodite and alike. 



Aggregate flower. To assemble or collect 

 together. 



Aggregate. The name of 'he forty-eighth 

 order of plants, in Linneus's Fragments 

 of a Tvatural Arrangement, in Pliilos. 

 Bot. containing such vegetaoles as have 

 their flowers properly ag^reg.ite. 



Ai,a. Wing. A membrane on the sides of 

 a petiole or footstalk of a leaf; or attach- 

 ed to a seed or seed-vessel. 



Albumen. Used by Grew and Gsertner for 

 the substance of the lobes of the seed ; 

 which corresponds with the white in 

 an egg. 



Ai burnum. The soft white substance in 

 trees, between the liber or inner bark 

 and the wood, gradually acquiring soli 

 ditv, and becoming genuine wood 



Aigt. (Flags) Tii> second of the seven 

 families, and the eighth of the nine 

 tribes or nations into which Linneus di- 

 vides all vegetables. Comprehending 

 ing such as have the root, leaves, and 

 stem all in one; as the lichens or liver* 

 worts, fuci or sea weeds, &c. 



Alternate {AltemusJ branches, leaves, 

 peduncles, or flowers, coming out one 

 after or above another, in a regular suc- 

 cession or gradation. Contrasted with 

 opposite. 



Alternately pmnate]ea.f. When the leaflets 

 or component leaves are arranged alter- 

 nately on each sideof the common petiole. 



Alvi-'ulat 11 receptacle. Divided into open 

 ceils, like an honey-comb, with a seed 

 lodged in each. 



Ament. 



