1368 



PLATAN us 



dta, Hort.). Lvs. cuneate or truncate ui tuucaie 

 lUe base, deeply 5-lobed, with narrow, elonsateil 

 rsely tcKithpd lobes. Gn. 1, p. 572, 573; 20, p. 371' 

 . undulata, Ait. (var. cunedta. Loud. P. cuneiUi, 

 ,il, '"i"!' ^','™''*'y = '''=*■ short-stalked, smaller] 

 :in> (li'i-iily ,!-inlipci and euneate. with narrow-toothed 



lobed.w:!!, I,,,-., 



fr.-headsran'n,'!'.' 

 Alex, and Ariz i. - 



The other si". 

 times planted ;is ,, . 

 & Gal., and i'. ulul, 

 yet introduced. 



PLATYCABYA {platys, broad, ,;,r,i„. nut; 



I "■iich on a short stalls. New 



'ina. Moric., which is some- 

 Mexico. P. Lindeniana, Mart. 

 , all natives of Alex., are not 

 Alfred Rehder. 



alluding 



hiiuld- 

 eone- 



to the shape of the fru 



cece. A monotypie g 



Juglandaeeas by its fi 



like spike. Small dt ,,„,,,.< w.rn 



solid pith: winter-buds with iiubrir.u^rd. lvs odd 

 pinnate similar to those of Uic,„-U, IWau. but smaller- 

 stammate catkins axillary; pistillate terminal, solitary! 

 tr. a small, winged nut in the axils of densely imbri- 

 cated, rigid and sharply pointed lanceolate bracts form- 

 ing a terminal upright cone. Barely cult, and probably 

 not hardv north nf f>.Q M;.q.ii« o,._i-_ j^^ . '^ ^ < 



not hardy north of the Middle States 



and interesting foliage, but its ornamental value is not 



ffa? in/o'"n'HicL,r^''^ ^"^ "^ "*y«-' P'-°'^="'ly -1«° by 



BtrobiUcea, Sieb. and Zucc. (Fortunea SMn.ns, 

 W, i'lOi^T *''Ta'^'*„'' H1""'S''* glabrous branches 

 Its. 8-12 m. long; Ifts. 9-17, sessile, oblong-lanceolate 

 falcate acuminate, doubly serrate, pubescent only on 

 he ra.dnb beneath 3-4 in. long: fr. -bearing cone abou° 



S 7 9.?io °#'«°7'' ""oTI"- S""""''-- Japan, China. 

 h.Z. 2:149. F.S. 4, p. 32Gb. K.H. 1888, p. 88. 



Alfred Rehder. 



PLATYCfiRIITM (Greek, broad horn; alluding to the 

 An anomalous genus of ferns with irregulariv lobed 

 one or'rVb''"'' V'" «°" forming irregular ''patches over 

 one or both surfaces. The sterile lvs. are flat, rounded 

 In'thetr"'"''t"°%"^ ^'^''^7°* '° '^y«''« to "^« substratum. 

 o?tiee= IVT/T"' ^ ^^J" *'^™« 8™^ *" *e surface 

 of tree.s and old plants and often form enormous nests. 



Eight kinds of Platycerium are offered for sale in 

 America. The word "disk,' as used below, refers to the 

 widest unbranched portion of the fertile frond. 



Phn.l 



c. Barren 

 D. jrerf'ilf 



•c'd 



uit the last forks or near 

 fronds stag -horn -like 



Angolense 



EE. Phlulx luil,. s,', 1,1 iriih 'i'lri' 

 l"irisl, ,r.„,l... ... 1 



DD. Fertile fronds in d'-s '. '.'.'.'..'" :, 



c. Barren fronds not stafi - Imrii- 



like, entire or merely loh, ,1. 



D. Segments and sinuse.y of the 



_ fertile fronds very broad... C, 



DD. Segments and sinuses narrow. 



E. rnliranclied portion of fer- 



ile fronds very long and 



PLATYCERIUM 



Wel«.). tertile fronds wedge-shaped in outline and 

 Jff7'i/i-r''^ "' ■''^ margin. It is also distinct by reason 

 of felt-hke covering of rust-colored wool on the lower side 

 of the fronds. Barren fronds large, erect; fertile fronds 

 attaining a length of 18 in. and a width of 9 in. at the 



i\V,'st''r?!:i"'"f ■V^-^'^l^ir'"','"'"'*'' ^^ *•>« f™'"!- Angola 

 (W -St Africa). G.C. III. 23:155 (repeated in 28:444). 



,1 "',.,"!Il*'"°^.^'"v»■ According to Blume's plate and 

 —rnpt.on this differs from all other kinds ii. having 

 the spores borne on a special appendage, which is kid 

 ney-shaped and attached b.'ow'^the fit^ fork Blume 

 says there are 2 such appendages ; that the ba?r"n 



roundish, i 



ire below, lobed above: fertile 



T ™ ^7'' . ■ .',°°^' "''"'y """"^s forked, pale green. 



Java.-The fertile fronds of P. biforme are said to grow 



in Gn. 4, p. 295, 



and anomalous. 



ft. long sometimes. The picture 

 labeled P. biforme seems to be distinc 

 though somewhat like P. grande. 

 3. gr4nde,J. Smith 



tin..ni,h 1 f ^ Pig. 1848. This maybe readily 



wn?M *^„l f *?'" // «'""<»•«« by its barren frond.s, 

 not nfrre ? ^*''/-l'^e, while those of P. alcieorne ar^ 

 not. Barren fronds stalkless; segments blunt, spongv, 

 pale green, tomentose: fertile fronds in pairs, 3-Uf, 

 long: son not at the base of every ultimate fork but 

 against the upper edge of the disk, with an infertile 

 fork Proje^fng beyond on either side. North Australia 

 and28 4ll') P. ^f frVP"'^' '''^P^awd in III. 10:698 

 ??-7. T--f^^- Gng. 5:1C9 (same as A.P. 6:701). F. 

 18o0:4( (.same as F.S. 6, p. 156). Not G M 40.1Ti 



V^'tiilf- f ""''""""■ ^°- 1- P- " (erroneously t 



4. Willichii, Hoc 



borne not at the b 

 disk which is not s 

 rounded and projectircr h 

 Sori roundish. ' M. .• 

 Hook. Fil. Exot.. p 



5. •Willinokii, M. , 

 by the sori, which ih ail 

 approach the base of tin 

 furnished with minute st 

 and pale green. Moore sa 

 gate, pendent, with scarci 



. As in P. grande, the sori are 

 le of the ultimate forks, but on a 

 iiarod oflf at its upper surface but 

 i;r iiitMt!,,. :inf,-le between the forks. 

 " /■ 'I^'- G.C. III. 28:435. 



' ' ' ii-licd from P. grande 



two-thirds 



. ■ ^' ■ i'ii':iriito for about 

 'eugth, one of the iiiai-frins of ench 

 primary branch entire, the other bearing numerous lobes 

 in about three series on a dichotomoifs plan." Strong 

 features ot this plant are the length narrowness and 

 acuteness of the forks, and also the narrownessof the 

 disk or unbranched portion just below the primary 

 forks Java G C II. 3:303 (repeated in III. 10:'^0 anfl 

 30, p. 30of ' "• ^^^ ("-epeated in Gn. 



6. ^thibpicum Hook. (P. StemmAria, Beauv.). Bar- 

 ren fronds rounded ; fertile fronds 2-3 ft. long clus- 

 tered, pendent, twice dichotomous (not twice triehot- 



Garden Ferns, plat,. .J. A. (J. l.-,:lil. O.M. 40:1.35 (erro- 

 Is are said to be cov- 



ered belo 



; P. gr 



itha 



f.L^yi^- «"T. ^^- "'"'•'''■"^ var. milii). Barren 

 fronds hke P. ajccorne, but the fertile fronds are erect, 

 the unbranched portion longer, the forks more numer- 

 ous and compact, the segments shorter and more 

 acute. Fronds clustered thinly, covered when mature 



stellate ba 



roundish 



Unbranched portion of fer- 

 tile fronds moderately 

 long g 



. .Sthiopicum 



Hillii 

 alcicome 



nf ».„h f ♦. 1 ^^ '"'■'"' "^ ^^^ '''""^ *">* "ear the base 

 of each of the last segments. The upper third of the 

 feitile frond is "1.5-18 ,n. across, 3-parted, the central 

 M u:iuent with 1 or L sirle lobes near the apex, the 2 lat- 

 'i'l'liTuT,!!'!? I i"'""',l'T,/";',' *«'''=e or thrice forked into 



8. alcicfirne, Desv. Barren fronds rounded, convex 

 ?;''Y ""eined; fert:ile fronds clustered, attaining 2-3 

 tt., 2-3 times dichotomous, the unforked portion erect 

 the segments pendent, rather narrow and sharply cut 

 under surface covered with thin cottony down : son in 

 irregtilar masses filling the last forks and a space 



tu hum alcicome). Temperate Australia. A.G. 14:153- 



