BOTANY. 81 



tubular in the flowers inspected, which are all much passed anthesis ; it is probably more 

 tubular at first, but is afterwards swollen out below by the enlargement of the gravid ovary. 

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

 anthers, which are one-celled through obliteration ; the missing cell being reduced to a narrow 

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

 splitting spontaneously, into two narrow lamellaa, in a manner answering well to the normally 

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

 but probably none. 



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

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

 and the imperfect calyx are points which connect it more closely 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. If correct, we have a curious anomaly 

 in the ovary of the present plant, namely: besides the four (or in some cases five?) normal 

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

 the ovary of Obolaria (Chloris, Bor.-Amer. p. 21, t. 3) and of Bartonia, (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 iame nature as the central cavity in the ovary of Martynla. I trust 

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

 the ovary. 



Plate XIII. HEMITOMES CONGESTUM. 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. 9. Vertical section through the whole pistil. 



SARCODES SANGUINEA, Torrey, Plant. Fremont, in Smith. Contrib. 6, p. 18, 1. 10. In pine forest, 

 base of Lassen s butte, northern California. 



SCROPHULARIACE^. (By A. GRAY.) 



PENTSTEMON SPECIOSUS, Dougl.; Hook. Flor. Bor. Am. 2, p. 98. Banks of Canoe creek, N. 

 Cal.; shores of Klamath lake. 



Pickering and Mr. Brackenridge, in the South-Sea Exploring Expedition under Commodore Wilkes ; and, finally, the 

 present discovery of Dr. Newberry. The six genera now known may be disposed synoptically in this way : 



1. Corolla mmopetala. 



Anthera Uloculares : 



1. Lotigitrorsum dehiscentes, dorso biaristatce, 



1. PTEROSPORA, Nutt. Corolla ovata, 5-dentata. Semina apice alata. 



2. Apice foraminibus dehiscmtes, muticce. Corotta campanulata 5-loba. 



2. SARCODES, Torr. Discus nullus. Antherae elongatse : filamenta brevia. Stylus elongatus. 



3. SCHWEIIUTZIA, Ml. Discus 10-crenatus. Antherae breves : filamenta gracilia. Stylus brevis crassua. 



00 Antherce abortu uniloculares. Calyx imperfectiis, bracteiformis. 



4. HEMITOMES, Gray: Vide, supra. 



2. Corolla ^-5-petala. Calyx imperfectus. 



5. ALLOTROPA, Torr. Sf Gray. Petala orbiculata, basi haud gibbosa. Discus uullus. Antherce ovatae, biloculares, longi- 

 trorsum dehiscentes. Stylus nullus. 



6. MONOTROPA, Linn. Petala cuneata vel spathulata, basi gibbosa vel saccata. Discus e deiitibus 8-10 deflexis. Antherae 

 reniformes, confluentim uniloculares, transversim dehiscentes. Stylus columnaris. 



6 Viz: HutTfyrif, a half-eunuch. 



11 Z 



