186 ORCHIDES. pleurothallis. 



Obs. Nuper ill. Lindley in foliis VIII. novuin proposuit ordinem , quem hic juvat 

 addere, licet assentiri non omnino possim. 



1. There is a group of species wiih great coriaceous leaves , long herbaceous spathes, 

 and numerous racpmes of fleshy flowers , risin» above ihe leaves. These are ihe 

 arisiocracy of ihe genus, alihough some npproach very nearly the mean genus Sielis ; 

 tliey form my Spalhaceae. 



2. Many olhers there are , conspicuous for their large leathery leaves . usually heart- 

 shaped, pouring forth great memhranous flowers in racemes, or usually smaller ones 

 in clusiers, all withoui conspicuous spatlies; such form ihe ilacrophyllae racemosae 

 (Acronias of Presl) . Macroiihyllac fasciculatae. 



3. Tlien conie Inrge lenved plunis with winged slalks, somelimes resembling a thin sti- 

 letio, and fasciculale small ilowers. These are Sicariae. 



4. Immediaiely follows a crowd. many of which resemhie Octomerias . all with fascicu- 

 late llowers and leaves lapering to tlie hase ; to ihese is applied the name of Aggregalae. 



5. Much like ihe last is a iiltle group wiih ihe points of tlie pelals dislended into a 

 gland. offering a passaire to the genus Reslrepia, of which ihey are kinsmen ; whence 

 they are called Rcslrepwidenc. 



6. Ciose to Aggregaiae , but wilh ihe inflorescence developed inlo a racenne, stands a 

 herd , none of wliich nre ab!e to extend it beyond the suramit of Ihe leaves ; hence 

 ihe nnme of Urachystuchyae. 



7. Th*'n ihe development of ihe floral nxis is manifested by long racemes of flowers ri- 

 sing high above llie leaves, as in Elongalac. 



8. And parallel wiih ihese are other species in wiiich the lenglhened axis is accompanied 

 by a wi'II mniked allennaiion of tlie sejials ; llie Acuminatae. 



9. Havirig consideralile relaiion lo the Inst divi^ion, bui with liiile or no development of 

 the stem , appenr liie Apodae or spi cies in which ilie siein , if jiresent, is much 

 shorier ihan the leaves ; and of ihem some form dense tulis : the Apodue caespilosae 

 while others crawl upon ihe ground: ilie Apodae prorepenlcs. 



10. Finally . a very smnll numlier of sjx-cies casis ofT ihe chnracter of a creeping or shor- 

 leiied rhizome praducing erect one - leaved stems . anO form an ordinary siem wiih 

 ieaves alternatitig wiih each olher in the usiinl way. These. ihe Caulescenles, close 

 tbe genus. The paraliel of these is to be found among the Labiaied Stclises. 



MU.SCOSAE. 



74. PLKUROTHALLIS CHAMAFLEPANTIIES Rchb. fil. in Bonpl. /IL ?40: aff. lorsan 

 Pl. pusillaf Lindi. vngiiiis arclis sccus nervos ciliaiis , ostio libero triangulo ciliaio, 

 folio obloiigo margriiaio apice emarginnlo seu hcuio basi jieiiolari cuneafo , pedunculo 

 capillari , sepalo uiroqne lanceo siiluitaio, inferiori bifldo , iiargine mintile scabro, 

 lepalis ligiilaiis lirevissimis , l.tliello basi trilobo , gynosifmio gracili. Plnnia tenella, 

 Le|innihides racemillorns simiilans. Caiilis secuiidarius tenuis , iri-, qnndrivnginaius 

 vix bipolliraris. Foliuin perguiiieneiim vix semi|ioliicarft , vix qiiaitam polln is Inium. 

 Peiluiiculus capillaris fulio loiigior. iJrarieae triangulae ciliniae minuiae. Perigoniuin 

 hvnliiiiim flavidum. Labolli basi trilobi lolii laierales acinacilormes vnlde alibreviali, 

 lobus medius lignlatns prodtit.us. (iynostemiurn uiiinqne poiie foveain lobiilatum. 

 .Nunc caulis tertionus axillnris in axillis folii 1 Capsula glabra oblonga. Valley of 

 Lloa , on trees. 313. Jnmieson. 



75. PLEUHOTII.ALLIS UNIFLORA Liiidl. Comp. B. M. II. 355. Huc referenda : Pl. striala 

 Fotke iii Tjdsch. f. Wiss. u. Naiurst. IV. 63: foliis ovali-oblongis utrinquc nitenuatis 

 caule tiiplo longioribub- , pedunculis unifloris ereciis , sepnlis palulis, laieralibiis con- 

 r^atis apice tnninm liheris bnsi gibhosis, petalis diniidio minoribus ovatis aculis in- 

 aequilnieris iiit«gris , labello liiigunelorini utroque margine in lobum acuium dilatato 

 iniegro apice roiutidato , lloribus viieilinis auraiuiaco strialis. — Radiccs Qlilormes, 

 albesceiites. Caulis mnno|il)yllus , folio trijilo brevior , veslilus. liracieae marcescen- 

 tes. Folium ovali - ublongum , vel laie lanceolutum utrinque attenuaium , coriaceum , 



