vies with the otlier in loveliness. One of them, BurVingtonia i-ennxta, 

 a native of Brazil, may be literally said to sink beneath its long heavy 

 clusters of snow-white blossoms just tinged with pink ; a second, seated 

 upon the highest branches of the Cedrela tree, perfumes the forests of the 

 same country with the odour of Jonquils: it is Biirlinf/tovia frar/rans ; 

 while a third, Siirlinf/tonla nihexcen.i, delicately spotted with rose 

 colour, inhabits the trunks of the Calabash tree in the mission of Yurima- 

 guas, in the province of Maynas, the hottest part of Peru, and is loaded 

 with blossoms all the year long ; and the fourth, Burl'mgtonia rigida, with 

 many peculiarities, to which I shall immediately advert, breathes the 

 delicious fragrance of the violet. 



At the end of the column of Burliiigtonia fragrans there are two little 

 brownish purple teeth, which are probably rudiments of anthers ; even 

 in Burlingtonia venusta there is a trace of them, but a less distinct one. 

 These bodies, in Burlingtonia rigida become long purple ears, fringed 

 with gland-like hairs, and standing erect like a pair of curved pen-knife 

 blades. Nothing indeed is more common throughout the whole of the 

 order than such rudimentary stamens in one state or other. In Zygostates 

 they attain their greatest degree of developement, separatini; from the 

 column to the very base, and sjjreading away from it at a right angle. 

 One species of the latter genus exists in Dr. von Martius's Brazilian 

 Herbarium ; the other I find among M. Descourtilz's drawings. 



Characters of the four additional species of Burlingtonia, and of the 

 last mentioned genus, are given below. 



Surlivgtonia I'enusta ; raeemis pendulis, scpalo anteriore intefferrimo supremo acuto, 

 labello infra mefliura tranverse plicato. Brazil ; Descourtilz's dra\\ ings, No. 63. 



Surlmgfonia fragrans ; raeemis erectis, sepalo anteriore inteserrinio supremo acuto, 

 labello postieo cucullato supra imguem bilamellato disco pubescente elevato apice tri- 

 deutato. Brazil, in tbe disti'icts of Morro-Quema<lo and Macahe, and in the neigh- 

 bourhood of the town of Bom .lesus de Bananal ; Descourtilz's drawiuii's, No. 12. 



Burlingtonia rubescens ; raeemis erectis, sejialo anteriore integen'imo lineai'i-lanceolato 



patente supremoque acnminatis, labello basi auriculato bilamellato. ^ Peru ; 



Poppig (not', gen. et sp. vol. 1 . p. 41 . f. 70 Rudriguezia Batemauni). 



Burlingtonia rigida ; caulibus teretibus rigidis durissimis erectis per lonja intervalla pro- 

 liferis, pseudobulbis obovatis compressis monophyllis, folds oblongis, scapo longo 

 rigido apice raeemoso, labello basi mutico disco sparse lainellato, columuA. pubes- 

 cente apice appendicibus 2 falcatis erectis pilosis aurita. Found in Brazil, near 



Villa Nova de .ilmeida, by Prince Maximilian of Wied Neuwied, and preserved in 

 the Brazilian Herbarium of Dr. Von JMartins. Tiiis singular plant lias stiff, appa- 

 rently erect stems, the thickness of a crow's quill, which throw out pseudo-bulbs 

 at intervals of from 1^ to 3 feet, each pseudo-bulb pushes forth its own roots, which 

 are extremely long and as fine as hairs ; and gives birth to a scape of the same thick- 

 ness and texture as the main stem, a foot and half long, at the tip of which are 

 clustered 5 or 6 flowers, the size of those of Burlingtonia nivea, with the perfume of 

 violets. I believe Messrs. Loddiges possess living plants of this. 



Zygostates. Sepala membranaeea, libera, reflexa. Petaln dilatata fimbriata, sepalis 

 mnlto majora, patula. Labellum cymbifornie, mendiranaceum, patens, basi intus 

 cornntum ant dentatum, cum columnn articulatum. Columna teres, antice exca- 

 vata, basi utrinque brachio aucta lineari, apice globoso, sepalis sequali, patentissimo 

 (stamine sterili). Rostelhim longissimum, subulfitu\n, arcuatum. Anthera rostrata, 



unilocularis. PolVviia 2, caudicula subulata, ghmdula minima. Ilerba; epi- 



phi/tte. acaule.'!, Braziliense=, vacemis /)cnrf!(«'s, floribus jirt/TJs riridi-lateis. 



1. Zijgostatcs cortmta : coi'nu unico incm-vo ad basin labclli, petalis rhomboideis. 



Brazil, Prince Maximilian of Wied Neuwied. 



2. Zygostates hinata ; dente duplici ad basin labelli, petalis lunatis. On trees on the 



highest wooded moimtains of the district of Bananal in Brazil, in the midst of 

 dense cold fogs, which are almost jierpctual, flowering in March ; Descourtilz's draw- 

 ings, No. 4. Sepals whitish. Petals greenish yellow. 



