72 A SYNOPSIS OF THE VEGETABLE KINGDOM. 



connate at base, valvate S3. Phytelephas is a well-known member of the 



above 61. Oreodoxa. Areca Tribe but of doubtful afflnit.v. 



BB. Petals free 84. I'-seudophiexix is a member of the Areca 



C. Anthers erect 62. Oncospeema. Tribe which probably belongs in the subtribe Cha- 



CC. Anthers versatile maedoreae, near Hyopnorbe. 



D. l<"r. globose : palms 85. Ptychoraphis is a member of the Areca Tribe 



unarmed 63. Euterpe. which probably comes after Ptvchosperma. 



DD. Fr. minute : palms 86. Ranevia is Itnown only in the juvenile state 



spiny 64. Acanthophcenix. and is conjectured to be near to Hyophorbe. 



Subtribe 5. Iriarteew. 154. LEMNACE.E. 



Stamens 9-15: stigmas termi- Floating plants with roots: 



nal or nearly so in fr. : leaf- As. inserted on marginal 



segments turned in every cracks of the frond: sta- 



direction 6.5. Iriartea. njens 1-2 ; anthers 2-celled.l. Lemna. 



Subtribe 6. ^yetieniea'. ^.. p^NDANACE-E. 

 No representatives known to 



be cult, in America. No staminodes in pistillate 



fls. : ovules solitary in car- 



Subtribe 7. Linospadicew. pels 1. Pandanus. 



A. Anthers basilixed, erect. . . . 156. CYCLANTHACE.13. 

 B. Stamens 6, 10, or 12: pis- 

 tillate fls. have oo stam- A. Plants with watery juice... 1. Carlcdovica. 

 inodes : leaf-segments AA. Plants with milky juice.... 2. Cyclanthus. 



premorse 66. Bacclaria. 



BB. Stamens very numerous : 157. TYPIIACE.i;. 

 pistillate fls. have no 



staminodes : leaf-seg- Fr. dry. at length split on 



ments acuminate 67. Howea. one side 1. Typha. 



AA. Anthers dorsifixed. versa- 

 tile: staminodes in pistil- 158. ARACE.E OR AROIDE.B. 

 late fls. 6-9 : leaf-seg- 

 ments acuminate 68. LiNOSPADix. [Note. — The arrangement of Engler in Monog. 



Phaner. Vol. 2, is more natural, but like most natural 



Subtribe 8. Ceroiylew. arrangements of large groups it is more difficult for 



the use of students who are in search of differences 



Stamens 9-15 : fr. with basal rather than likenesses. Moreover the Englerian sys- 



stigmas 69. Ceroxvlo.n. tem of the Araceee is largely based upon histological 



characters, which are of no use to most horticultur- 



Subtribe 9. Malortica;. ists. i 



Not cult, in America. a. Perianth 0. (except female 



tls. of Peltandra) 



Subtribe 10. Imianurea-. "-^'''s- mona?cious (in Ari- 



saema sometimes dicec- 



A. Stigmas excentric or or lat- ^ '""sj. ;• •■;•,• •• 



eral in fruit 70. IIeterospathe. c- Spadix appendaged (ex- 



AA. Stigmas basal or nearly so ''^Pt '" 1 rotea). . . ... 



in fruit "■ ^''^ male and female 

 B. Stamens is-io': ' ovarv'i- inflorescences con- 

 celled; palm armed. ..71. Stevensonia. tiguous with no 

 BB. Stamens 6, with didy- neutral organs be- 



mous anthers tween : ovules ana- 



c. Ovary 1-celled : palm tropous or semi-an- 



armed 72. Verschaffeltia. atropous 1. Amorphophallus. 



cc. Ovarv 3-celled : palm fo. The upper fls. males, 



unarmed 73. Dypsis. lower ones females : 



ovules orthotro- 



Subtribe 11. Cluimccloi-ea: ^ PO"s. ............ 



e. Ibe s p a d 1 X free 



A. Fls. dicecious or mono'cious f''om the spathe 



in different spadices, spir- or adnate at the 



ally arranged 74. Cham.edorea. ??^^- .; 



AA. Fls. monfficious in the same f. Male fls. sparse : 



spadix '^s. and fls. ap- 



B. The fls. arranged in elong- Pfai- together., 



ated heaps or clusters.75. Hyophorbe. g- Tube of spathe 



BB. The fls. sparse, solitary or with c o n- 



in pairs 76. Roscheeia. nate mar- 

 gins : male 



Subtribe 12. Gconomew. As. with sta- 



mens; a n- 



A. Anthers arrow-shaped 77. Calyptrogyne. thers horse- 



AA. Anthers with long separate. shoe-shaped. .2. ,\risardm. 



pendulous cells 78. Geono.ma. <5G. Tube of spathe 



c o n v olute : 



IMPERFECTLY K.NOWN GENERA OF PALMS. dioecious"! 



males with 



79. Balaka is a member of the Areca Tribe and 2-5 stamens.3 Aris.ema. 

 probably belongs between Ptychosperma and Dry- ff. Male fls. dense : 

 mophloeus. differing from those genera as indicated Ivs. often ap- 



in the article Balaka. pear before fls. 



80. BiSMAECKiA is a member of the Borassus G. Tube of spathe 

 Tribe. with connate 



81. Chrysalidocaepi'.s is a well known member margins. ... 

 of the Areca Tribe of doubtful affinity. H. Ovule soli- 



82. ExORRHizA is a member of the Areca Tribe, tary : Ivs. 

 subtribe Euareeea?. entire 4. Biardm. 



