ARCHEGONIA TAE 5 1 



Aragoa H. B. et K. Scrophulariaceae (in. i). 3 Andes. 



Aralia fourn. Araliaceae (2). 30 %_. The r. of A. (Panax) Ginseng 

 Baill. (A. quinquefolia auct.) yields the famous Chinese medicine 

 ginseng. A. papyrifera Hook., see Fatsia. 



Araliaceae (EP., BH.). Dicots. (Archichl. Umbelliflorae). 51 gen., 

 660 sp., chiefly trop. (esp. Indomal., trop. Am.). Usu. trees and 

 shrubs, some with palm-like habit ; many twine, some (e.g. Hedera) 

 root-climbers. L. usu. alt., often large and cpd., with small stips. 

 Fl. small, in umbels frequently massed into cpd. infls. Fl. $, reg., 

 epig., usu. 5 (3 oo )-merous. K 5, very small, C 5, AS, G (5), 

 5-loc., with i anatr. pend. ov. in each, micropyle facing outwards; 

 styles free or united. Usu. drupe with as many stones as cpls. Embryo 

 small in rich endosp. (Placed in Umbellales by BH.} 

 Classification and chief genera (after Engler) : 

 i. Schefflereae ( P val vate) : Fatsia, Hedera. 

 i. Aralieae (P imbr., sessile with broad base) : Aralia, 



Panax. 

 3. Mackinlayeae (P val vate, shortly clawed) : Mackinlaya. 



Aralidium Miq. .Araliaceae (2). 2 Malaya. 



Araliopsis Engl. Rutaceae (iv). i Gaboon. 



Ararocarpus Scheff. Anonaceae (4). i Java. 



Arar wood, Tetradinis artictilnta Masters. 



Araucaria Juss. Coniferae (Pinaceae ; see C. for gen. char.). 10 S. Am., 

 N.Z., Polynesia, Austr., in two sections, In i (Colymbea, 1. broad, 

 fr. cpls. not winged) A. imbricata Pav. (monkey-puzzle, Chili) with 

 ed. seed, A. brasiliana A. Rich. (Brazilian pine, abundant in S. Brazil), 

 A. Bidwilli Hook, (bunya-bunya pine, Queensland), and others. In 

 2 (Eutacta, needle 1., scales winged) A. excelsa R. Br. (Norfolk I. 

 pine), A. L'unninghamii Ait. (Hoop pine, E. Austr.), and others. All 

 have useful timber. Cult. orn. trees. 



Araucariaceae = Pinaceae. 



Araujia Brot. Asclepiadaceae (n. i). 6 Brazil, Arg. 



Arborescens, arboreus (Lat.), tree-like. 



Arboretum, collection of trees. 



Arbor-judae, Cercis Siliquastrnm L. ; -vitae, Thuja spp. 



Arbour-vine, Spanish (W.I.), Ipomoea tuberosa L. 



Arbutus (Tourn.) L. Ericaceae (n. 3). 20 Medit., W. As., N. Am. 

 Fr. a dry berry. A . Menziesii Pursh. (N. Am., madrona laurel) useful 

 wood. 



Arbutus, trailing (Am.), Epigaea repens L. 



Arcangelisia Becc. Menispermaceae. 2 Malay Arch. 



Arceuthobium Bieb. Loranthaceae (n). 10 j. Cf. Ann. of Bot. 

 II. 137. 



Archaeocarex Borner. Cyperaceae (in), i S. Afr. 



Archangel, see next ; yellow-, Lamium Galeobdolon Crantz. 



Archangelica Hoff. (Angelica L. p.p. EP.). Umbellif. (ill. 6). 10 N. 

 temp. The petiole of A. officinalis Hoff. is eaten, and offic. 



Archangiopteris Christ et Giesenh. Maratt. (i). 2 S.W. China, Formosa. 

 L. once pinnate; sori linear, of 80 160 sporangia. 



Archemora DC. = Peucedanum L. (^A r .)=TiedemanniaDC. (Umbell.). 



Archegoniatae. Those pi. in which the ? cell (archegonium) is contained 



42 



