BOTANY. 81 



tabular in the flowers inspected, which are all muoh passed anthesis; it ii probably mora 



tubular tit first, but is afterwards swollen cut below by the enlargement of the gravid o "air. 

 The aestivation could not be made out. The greatest peculiarity of the plant is found in the 



authors, which are one-celled through obliteration; the missing cell being reduced t>» a narrow 

 longitudinal ridge, almost continuous with the filament. This ridge is bipartible, it" not 

 splitting spontaneously, int.* two narrow iamellas, in a manner answering well to the normally 

 longitudinal dehiscence of the fertile oell. It may possibly even contain a few grains of pollen, 



but probably none. 



This remarkable semi-castration has suggested the generic name. 4 In the total absence of a 

 disk, and in the elongated style, our plant accords with Barcodes. The pervious stigma and style 

 and the imperfect calyx are points which connect it more oloselj with Monotropa, of which it 

 has the general aspect. There are indications that the fruit is baccate. It is difficult to make 

 out the structure of the ovary clearly, nor is there much material to be sacrificed in the endeavor. 

 I think, however, that our analysis is not far wrong. It' correct, we have a curious anomaly 

 iu the ovary of the present plant, namely: besides the lour (or in Borne cases five?) normal 

 cells, there is an axile cell equally and profusely ovuliferous throughout, and reminding on 

 the ovary o( Obolaria (Chloris, Bor.-Amer. p. 21, t. 3) and of Bartouta, (Man. Bot. Northern 

 United States, ed. 2. p. 347.) As will be seen from the framing of the generic character, I 

 take this to be of the same nature as the central cavity in the ovary of Marlynin. I trust 

 further specimens may duly come to hand, and confirm or correct this view of the structure of 

 the ovary. 



Plate XIII. Hemitomes coxgestvm. — The plant of the natural size. Fig. 1. Side view 

 of a flower and its bract. 2. Front view of a flower. 3. Stamens and pistil. 4. A 

 detached stamen, the anther seen laterally. 5. Anther seen posteriorly; the ridge representing 

 the aborted cell towards the eye. 6. Same seen laterally, and divided transversely. 7. Pollen. 

 8. Transverse slice of an ovary. 'J. Vertical section through the whole pistil. 



- v,i i.m:a, Torraj, Plant. Fremont, in Smith. Contrib. 6, p. IS, /. 10. In pine forest, 

 base of Lassen's butte, northern California. 



80ROPHULABIACE2B.— (By A. Gray.) 



Pents-temun BPBCI081 -. Doual ; Hook. Flor. Bor. Am. 2, p. 98. Ijauks of Oanoe creek, N. 

 OaL; 6hores of Klamath lake. 



Pickering and Mr. Bnckenridge, in the- Sjuth-Sea Exploring Expedition uu<lcr Cumtuolwru Wilkes; ... tbe 



present discovery of Dr. Newberry. The six genera now kno\wi ma] be 'Imposed gynoptiailly in this way : 



j 1 . Corolla monopetala. 



° Anilierce bil'xulart* : 



1. b/ngilrortum de/ii*caile* , dorto biarutatcc. 



1. PmoarOKA, .Vufl. Corolla uvata, i- >■ min.i epj 



. .\y\at f</rammd>ui dthuanUi, mutkac. Corolla eampanulata b-loba. 



2. Saboodbb, Torr. biscm nullu- stylus elongatae. 



3. N_iimiMiziA. Jul. I'i.^'iK lu- runt;- >lu* broru cnuMiu. 



oa AnUierce abortu muloadarm. Calyx unptrftctiu, bratta/onnu. 



4. Hshitoiob, Gray: Vide, eapra. 



§ 2. Corolla 4 :>j*Lt. tper/tctui. 



All.'Ie«i-a, Torr. If Gray. IV tola orbiculata, baai baud gibboaa. L»i*cu* Doll 

 nam debiaoente*. Stylus nulltu. 



6. Mo»ot*opa, Lum PcUla canuaU v iU, baai gibbon vel nccaU. , 



renilunnc*. eoaflae&tim unilocular^*, tnui»- 



, I balOunuob. 



11 z 



i 



