398 CLVI, JUGLANDE^. 



aliisqiie in ordine Amentaceartm iiielusus, re'vera pluribus iiotis Urticaceis aceedjt, sed foliis pinnatis, 

 fnictu intus busi spuri^ 2-4-locollato, seminis lobis intra loculos descendentibus, ab omnibus 

 affinibiLS facile separatur. 



CONSPECTUS GENERITM. 



Amenta 



1. Carta. Bractea sub fl. ? parra v. 0, bracteolse 0. Dnipse exocarpiuni ab endocarpio 

 Isevi V. vix rugoeo apice 4-Talvatim secedens.— ^wi^r. hor., Mexico, 



2. JuoLANS. Bractea fl. ? bracteolis ovario arete adhserens, sub perianthii limbum irregu- 



lariter dentata, perianthium exterius simulans. Drupse exocarpium endocarpio nigoso arete 



adhserens v. demxim irregulariter solvendiim.— Ewr., Asia vned, et or., Amer. bor., Mea^ico, 

 Ind. occi'd. . . :- 



■ ■ + 



3. Pterocakta. Bractea fl. $„.basi ovario subadnata, sub fructu immutata; braetcolte intra 

 bracteam latse ovario adnatse. Drnpa bracteolis auctis oblique adnatis 2-ixli.itA.— Caucasus, 

 China, Japonia. 



4. Exgelhardtia. Bractea fl. $ ima basi cupulala, ovario adnata, 3-loba, fractifera aucta, 

 venosa, patens, 3-loba, lobo medio lougiore, basi nucem foveus.— /«c/. or., Archip. Mai, Chiiia 

 ansir. 



*» 



Spic<s uirinsque sexus erectts, imhricaio-hracteatce. 



5. Platycarya. Fl. ? ad basin bracteae sessiles, ebractcolati. Spiea fructifera strobili- 



formis, bractei-s squamiformibns numerosis imbrioatis nuces par\-a3 sapiiis 2-alatas obtegontibus. 

 — Japonia, China hor. 



1, Carya, Kutt Gen. PI. Amer. ii. 220. (Hicorias tt Scorias, Uafin. ex Bndl. Gen. PL 

 I126.)-Amenta ^ lateralia, pendula. Perianthium cum bractea lineari concretum, 

 irregulariter 2-3-lobum. Stamina go (3-10), in receptaculo adnato .sub-2-seriata ; anthe- 

 rarum connectivum tenue, ultra loculos non productum. Ovarii rudimentum 0. Flores 

 ? breviter v. inteiTupte spicati, ssepius pauci, bractea parva fugaci v. omnino deficiente 

 ^ exmvolucrati. Perianthium ovario adnatum; limbi lobi 4, breves ^qualesve v. uno multo 

 longiore. Ovarium et ovulum ad normam ordinis ; styli rami undique stigmatosi papilloso- 

 fambnati, ad apiccm ovarii subsessiles patentes. Drupa subsicca, ovoidea v globosa 

 exocai-pio (e perianthio adnato ?) carnoso-coriaceo in valvas 4 supeme dehiscente ■ endo- 

 carpium indehiscens, l^eve v. parum rugosum, cam laminis intrusis fructumplus minus in 

 loculog 2-4 divideiitibus, nunc crassum durissimumque, nunc tenuius fere crustaceum 

 Semen mferne 2-4-lobum ; cotyledonibus carnosis s^pe rugosis, non tamen plicatis - 

 Arbores habitu Juglandis. Folia imparipinnata, foliolis serratis. Amenta ^ ad basin 

 mnovationum m pedunculo communi brevi s.-epis.sime terna, ternationibus iuterdum 

 in ramulo numerosis. Spica $ terminalis, floribus nunc 6-10 dissitis, nunc 3-4 fere 

 cap it at is. 



Species notae 10, omnes boreaU-Amerj-caiiie, quarum una usque ad JVIexicum extensa. Cas DC 

 Prod, xvi. II. 142. G<^rtn. Fruet, t 89 {Juglavs). Mich. Arh. Amer. Sept. \. Ic. Jugl. t. 3 ad 10. 

 Wais Dendrol Brit, t. 148, 167, Torr. Fl K.. York, t. 100, 101. Emers. Pep. Trees Masf^achus. t. 

 12 ad 1.5. 



r w 



I 



2. Jug:ians, Linn. Gen. n, 3071, i;/-0j;ar/6.— Amenta ^ lateralia, pendula. Perianthium 

 cum bractea Iineari concretum, margine irregulariter 5-C-lobum. Stamina oo (8-40), toro 

 lineari 2- cc -seriatim affixa; antherarum connectivum apice sgepius clavatum v. dilatatum 

 loculos tamen vix superans. Ovarii rudimentum 0. Flores 2 in spica terminali pauci! 

 Bractea cum bracteolis ovario alte adiiat^e, involucrum adnatum (calycem auct. phir.), 

 margino nrc-ulariter 3-5-lobum v. dentatum formans. Perianthium (petala nonnullorum) 

 mtra involucrum ovario altius adnatum, limbo libcro 4-dentato v. alte 4-fido, lobis 

 imbricatia fequalibus v. uno paullo majoro. Ovarium et ovulum ad normam ordinis ; 

 styh rami stigmatosi lineaj-es v. lunceolati, recurvo-patentes, a basi fimbriato-plumosi. 

 Dnipa ssepius majuscula, globoaa v. ovoidea, exocarpio carnoso indehiscentc adhrerente 

 V. demum irregulariter fisso aolutoquo ; endocarpium crassnm, durum, extus rugosum. 



