\ 
3;^g BOTANY OF THE VOYAGE 01' H.M.S. KEUALD. 
439. AscLEPiAs f^Iaucescens, Kth. ! Dene, in Dc Cand. 1. c. p. 565. Talisco (Lay and Collie !). 
■ UO ASCLEPIA3 curassavica, Linn., Dene, in Be Cand. 1. c. p. 566.-^. incarnata, Hook, et Am. 
Bot Beech p 438. non Linn. !-Benth. Bot. Sulph. p. 137.-Nomen vernacul. " Margarita." Com- 
mon in the hotter and temperate parts of Durango and Sonora, and on the whole western coast of 
Mexico. 
441. AscLEPiAS Lmaria, Cav., Dene, in De Cand. 1. c. p. 570.-Nomen vernacul. " AlgodoncUlo." 
In stony places near the city of Durango. 
Geographical distribution : Diffused over the whole table-land of Mexico, from Oasaca (Andrieux !) to 
Zacatecas and Durango (Hartwegl Seemann! Parliinson! Coulter! Jurgensen! etc.). 
442. Chthamalia pedunculaia, Dene, in De Cand. 1. c. p. 605. Chihuahua (Potts !) . 
According to Decaisno the fruit of this herb, called Xalayote, is edible ; in habit the plant resembles 
Madostigma variann, Stocks.' 
r 
GENTIANE^.* 
{Auctore A. Gnsebach.) 
443. Gyraxdra chironioides, Griseb. in De Cand. Prod. vol. ix. p. 44. Sierra Madre, in dry 
places. 
The specimens of Dr. Seemann differ somewhat from those of Bcrlaudicr by longer interaodia and 
shorter leaves (2-4'") ; the latter are 4-8'" (not 4-8", as was stated by misprint in the original descrip- 
tion). Sierra Madro. (n. 2067.) 
444. Gyrandra speciosa, Bcnth. Bot. Sulph. p. 127. t. 45 l—Erythraa macrantha, ^ major, 
Hook, et Arn. Bot, Beech, p. 438. Tcpic (Lay and Collie !). 
* I have described (Bonplandia, vol. i. p. 226) a new genus of Gentiane<r, found by Dr. Seemann in 
Oahu, one of the Sandwich Islands, and dedicated by me to Dr. A. Schenk in AYiirzhurg. I subjoin the 
description : — 
ScnE^KiA, novum genus Genfianearum. Gen. Char. Calyx 5-fidu3, segmentis dorso alatis. CoroUa 
infundibuliformis, marcescens, tube cyHudrico, Hmbo 5-partilo. Stamina 5, corollas fauci inserta, fila- 
mentis exsertis. Antherfe immutatae, incumbeutes, connective inani. Ovarium valvis introflexis semiqua- 
driloeulare, ovuha indefinitis margini interiori insertis. Stylus distiuctus, dcciduua, stigmate capitulato. 
Capsula hivalvis, septicida, semiquadrilocularis. Semina minuta, placentis parietalibus immersa.— Herba 
annua, tymis spiescformibus, floribus roseis. Genus Sehaee proximum et habitu conforme, capsulse et an- 
thera> structura distmctiim, inflorescentia I!r7/tlrcC(S spicata) accedens. 
ScuENKiA sel<Eoidcs. In pratis ins. Sandwichcnsis " Oahu." (Seemann coll. n. 2272.) Caulis spi- 
thameeus, strictus, superne ramosua, ramis erecto-patcntihus, interaodiis Q-^'" longis teretiusculis tenuissime 
tetrapteris. Folia ovali-orbieulata, obtusissima, basi arete contigua, palmatinervia, nei-vis tenuibus, medio 
subtus prominulo, 6-10"' longa, 4-6'" lata, laevia, bracteantia sensim angustiora. Cyma spiceeformis, subuni- 
laterahs, axillis ramomm florcs subsessdes bibracteolatos foventibus, altera plerumque sterili, aceedentibus- 
que quandoque floribus alaribus ad ramorum basin. Elores facie ErythrcBes, 6-7"' longi, limbo corolla caly- 
cem parum excedcnte. Calyx alis 5 lineari-lanceolatis e nervis medianis carinatus, lobis lanceolatis acumi- 
natis subiniequalibus. Corolla tubus limbum quadruplo excedens. Stamina Umbo corollffi paullo suporata, 
stylum subiequantia, filamentis tenuibus anthera duplo longioribus, antheris supra basin filamento insertis 
oblongis, quandoque gyro dimidio flexuosis. Stigma crassiusculum. Capsula oblonga, valvis intus conti- 
guis solutis. 
