154 



VOCABULARY. 



Aqi'.lom'craled. Bunched, crowded to- 

 gether. 



Ag'grcgatc. (From aggregare, to as- 

 semble.) Many springing from the 

 same point ; this term was at lirst ap- 

 plied to compound flowers, but there 

 is at present a sevenfold division of 

 aggregate flowers ; 

 aggregate, properly so called ; 

 compound, amentaceous, 



umbellate, glumose, 



cijmose, spadiceoux. 



Ag'gregatc flower is erected on pedun- 

 cles or footstalks, which all have one 

 common receptacle on the stem; they 

 sometimes have one common calyx, 

 and are sometimes separately fur- 

 nished with a calyx. 



Ai'grette. See Egret. 



A'la. A Latin word signifying a wing. 

 It is sometimes used to express the 

 angle formed by the stem with the 

 branch or leaf Linnaeus and some 

 others use the term ala, as the name 

 of a membrane, affixed to some spe- 

 cies of seed which serves as a wing 

 to raise them into the air, and thus 

 promote their dispersion. 



A'la. The two lateral or side petals of 

 a papilionaceous flower. 



Albu'mcn. The farinaceous, fleshy or 

 horny substance which constitutes 

 the chief bulk of monocotyledonous 

 seeds; as wheat, rye, &c. 



Albur'num. (From «26w5, white.) The 

 soft white substance which in trees is 

 found between the liber, or inner bark, 

 and the wood, and becoming solid, in 

 progress of time is converted into 

 wood. From its colour and compar- 

 ative softness, it has been styled the 

 fat of trees. It is called the sap-vwod, 

 and is formed by a deposite of the 

 cambium, or descending sap; in one 

 year it becomes wood ; and a new 

 layer of alburnum is again formed 

 by the descent of the cambium. 



Al'ga. Flags ; these, by LinnEeus, com- 

 prise the plants of the order Hepatic<e 

 and Lichenes. 



Al'pine. Growing naturally on high 

 mountains. 



AUer'nate. Branches, leaves, flowers, 

 &c. are alternate, when beginning at 

 different distances on the stem ; op- 

 posite, is when they commence at the 

 same distances, and base stands 

 against base. 



Alter'nalely-pinnate leaf; when the 

 leafets are arranged alternately on 

 eact) side of the common footstalk or 

 petioie. 



Alve'olate. Having cells which resem- 

 ble a honeycomb. 



Am'bitus. The outer rim of a frond 

 receptacle, &c. 



A'ment. Flowers collected on chaffj 

 scales, and arranged on a thread or 

 slender stalk ; their scales mixed 

 with the flowers resemble the chaff 

 in an ear of corn ; in the willow and 

 poplar, an ament supports both stam- 

 inate and pistillate flowers on distinct 

 roots. Flowers supported by an 

 ament are generally destitute of a 

 corolla. 



Amplexicau'lis. Clasping the base of 

 the stems. 



Anal'ysis. To analyze a plant botani- 

 cally, is to ascertain its name, by ob- 

 serving its organs, and comparing 

 them with scientific descriptions of 

 plants. 



Ancip'etal. Having two sharp edges 

 like a sword. 



An'dria. Signifies stamen. 



Andrug'ynous plants. Such as bear sta- 

 minate and pistillate flowers on the 

 same root ; as the oak and Indian 

 corn : such plants belong to the class 

 Moncecia. 



Angiocar'pus. Fungi bearing seeds in- 

 ternally. 



Angiosper^'mal. (From angio, a vessel, 

 and spenna, seed.) Plants whose 

 seeds are enclosed or covered. 



An'gidar. Forming angles; when the 

 stems, calyxes, capsules, &c. have 

 ridges running lengthwise. 



Angustifo'lius. Narrow-leaved. 



An'nuai. A plant which lives but one 

 year. The herbage is often annual, 

 while the root is perennial ; in this 

 case the plant is said to be perenmial. 



An'imlated. Having a ring round the 

 capsules ; as in ferns ; or in mush- 

 rooms having a ringed stipe. 



An'nulus. A ring. 



Anom'alcms. (From a, withotrt, and no- 

 mos, law.) Irregular, or whatever 

 forms an exception to a general rule. 

 The llth class in Tournefort's meth- 

 od is called awomaZiX, including plants 

 whose corollas are composed of ir- 

 regular amd dissimilar parts; as the 

 columbine, monk's-hood, violet, lark- 

 spur, &c. 



An'ther. (From anthos, a flower; so 

 called as indicating its importance.) 

 That part of the stamen which con- 

 tains the pollen ; it is of various forms, 

 as linear, awl-shaped, heart-shaped, 

 round, &c.; it is one-celled, two-cell- 

 ed, &c. 



Antherid'iuvi. A mass of pollen. 



Antherif'erous. Flowers bearing an- 

 thers without filaments. 



An'thus. (From the Greek antlvos.) A 



