HaXDBOOK OI" TrKKS of THK XoRTHKKX StATKS AM) ("a.nada. 4.'j5 



THE TULIP-TKEES. Genus LIRIODEXDROX L. 



Trees of tuo siiccii's. nm- nf .-xlt usive distribution throufiliout tlie eiistern states of North 

 Aiiierica and the oilier in central China. They are irees with deei)ly furrowed brown bark 

 and further characterized as follows: 



Learrs in(ur\ed in the bud and bent down so that tlie apex points to the base of the 

 bud. alternate, deciduous, truncate, subcordate or soniewliat wedgp-shaped at base, truncate 

 or with a wide sinus at apex, with 4 pointed lobes (occasionally with 2 or t» lobes) : stipules 

 formed by the accrescent scales of the laterally compressed obtuse buds joined at the edxes, 

 strai)-shai)ed and tardily deciduous. Flotrcrs appearins; after the unfolding of the leaves. 

 (•onsi)icuous, cup-shai)ed, somewhat frasiant : sepals three, spreading or leflexed, concave, 

 {greenish white and tarly d(>ciduous : petals (i in 2 rows, erect, fallinj; early: stamens with 

 filaments about '/, as lonj; as the linear L*-celled extrorse anthers: jjistils closely massed 

 tosetlu'r on the elongated recei)tacle ; flattened, with wide style, stij^matic at the acuminate 

 recurved apex ; ovules 2. sus])ended from the ventral suture. Fruit a narrow erect liKht 

 brown cone, consisting of the flattened samaras-like indehiscent 4-ril)bed cari^els which separate 

 from the axis when ripe: .seeds usually 2. suspended in the small cavity at the base of the 

 samara : embryo minute at the base of fleshy albumen. 



The name is from two (Jreek words meaning lili/ or tuliii and trcr. 

 For species see pp. 21'i-.il'). 



CUSTARD-APPLE FAMILY. AXOXACE.E. 



Trees and shrubs of about fifty genera and five hundred and fifty species, with generally 



aromatic properties and mainly of the tropical and subtropical regions of both the Old World 



and the New. Two genera only are represented in North America, one in southern Florl<la 



and the West Indies and the other in the eastern states. 



Leaves deciduous, alternate, entire, petiolate. pinnately- veined, conduplicate in the bud, 

 without stipules. Ftoirers solitary, perfect and mostly axillary; sepals three, valvate in the 

 bud ; petals six in two series ; stamens numerous on an elevated rounded receptacle with very 

 short filaments and 2-celled introrse anthers adnate to the thick fleshy truncate connective; 

 pistils few on the summit of the receptacle; ovary 1-celled. containing from one to many 

 anatropous ovules. Fruit fleshy, baccate, formed by the riiiening of the single or several 

 united pistils; seed inclosed in an aril, large, anatropous. with thin lustrous brown crustaceous 

 coat and minute embryo at the base of ruminate albumen. 



THE PAPAWS. Genus ASLMIXA Ai)an.so\. 



Small trees or shrubs emitting an unpleasant odor when bruised and confined to eastern 

 North America. Six or seven species are known, of which all are shrubby and confined to 

 the South Atlantic and (lulf states except one. which is a small tree entitled to consideration 

 here and the only representative of the ("ustard Apple Family extending far outside the tropics. 



Leaves membranaceous. Fl(Jir<rs mostly from the axils of the leaves of the previous 

 season, nodding, pedunculate, of a puri)lish color and disagreeable odor; sepals green, ovate, 

 smaller than the petals, concave and early deciduous; petals six, imbricated in the bud, 

 accrescent, hypogenous prominently reticulated, the three outer petals alternate with the 

 sepals, si)reading and larger than the three inner which are opposite the sepals and erect; 

 stamens closely ma.ssed together, anther-ccdls separate on the connective; pistils few from 

 the summit of the receptacle, with styles slightly recurved and stigmatic on the inner side 

 above; ovules several, horizontal, in two ranks on the ventral suture. Fruit baccate, oval 

 or oblong, smooth; seeds compiessed and with large hilum at base. 



The name Asimiiui is Latinized from the Indian name, asimiit. of the I'apaic. 



I'nr s,„r\.s x,r pp. .>n;^JI7. 



LAUREL FAMILY. LA TRACK. E,. 



Aromatic trees and shrubs of about forty geniM-a and nine hundred species of wide 

 distribution throughout the tropical and a few in the temp(>rate zones. Six genera, of which 

 two are shrubby, are represented in North America. (Uie on the racitic slojie and three in 

 the Atlantic states. 



Leaves alternat(\ simple. ]irlluci(l-p\iuctatt\ usually thick, without stijiules. Floirerx 

 small-, regular, yellowish green, iierfecl. polygamous, diiecious or nuuitecious. usually fragrant ; 

 calyx 4-f.-i)arte(l. the .sepals imbricated in the bud in two series; corolla none; stamens 1(1-12. 

 distinct and inserted on the base of th'' calyx in three or four series of three each, those of 

 the fourtii serie-i sterile; anthers 4-celled opening by uplifted valves; ovary superior. 1-ceIled. 



