OF ARTS AND SCIENCES: NOVEMBER 11, 1863. 195 



Spalding, Dr. Pickering. — Flowers nearly 5 lines long. Bracts seta- 

 ceous. Legume 2^ or scarcely three lines long, apiculate, under the 

 wool transversely veined, maturing one or two seeds in each cell. 



8. A. Lyalli, sp. nov. Albo-sericeus ; spica brevius pedunculata 

 elongata laxitlora ; floribus parvis (lin. 3 longis) ; calyce villoso, denti- 

 bus tubo oequilongis ; leguraine incano postice profundius sulcato : ca?t. 

 prjecedentis. — Upper Yakima River, on the boundary between Brit- 

 ish Columbia and "Washington Territory, Dr. Lyall (no. 8, ex herb. 

 Kew.). — Appears different enough from the preceding by the more 

 silky pubescence, and the loosely-spiked flowers of only half the size. 



§ 4. MolUssimi.* Legumen cartilagineum vel coriaceum, estipitatum, ob- 

 longum, turgidum, nee compressum nee obcompressum, ad suturas 

 utrasque pi. m. sulcatum, septo perfecto bilocellatum, demum in- 

 curvum. — E caudice perenni subacaules, villo sericeo molli (saspius 

 fulvo vel aurato) splendentes ; pedunculis scapiformibus elongatis. 

 Spicte densiflorce. Flores inter majores, violacei ; calyce tubuloso. 



9. A. MOLLissiMUS. ToiT. in Ann. Lye. N. Y. 2, p. 178. Legumen 

 angusto-oblongum, cartilagineum (5-9 lin. longum), glaberriraum, su- 



* The materials in our herbaria are too scanty to justify me in meddling with 

 the Astragali of the region contiguous to the United States on the south. But 

 there are two very well-marked Mexican species which may be noticed here, viz. 

 Phaca mollis, H.B.K., and a new species allied to it. If not referable to the pres- 

 ent group, — with some extension of the character as to the legume, making less 

 account of the introflexion of the dorsal suture, — they will constitute a strictly 

 analogous group. The species are ; — 



A. HuMBOLDTii. Phaca mollis, H.B.K. Nov. Gen. & Sp. 6, p. 496, t. 585. 

 Brevicaulis, fulvo-sericeus ; foliolis oblongis (lin. 4-6 longis) ; spicis oblongis ; flori- 

 bus mediocribus (lin. 8-9 longis) " albis sen violaceis" (ex Kunth); vexillo su- 

 perne recurvo-patente; alis angustis rectis carinam subfalcatam longius superanti- 

 bus ; ovario sericeo suturis hand introflexis. — The specimens examined were col- 

 lected near the city of Mexico, by Dr. Halstead (herb. Torr.), in flower. The 

 legume is still unknown. Instead of the " alaj .... nee adherentia " of Kunth, I 

 find that the wing and keel petals on each side hook into each other neatly, as in 

 other species. 



A. ORTHANTHUS, sp. uov. BrcvicauHs, velutino-tomentosus ; foliolis ovalibus 

 (6-8 lin. longis); spicis capituliformibus ; floribus elongatis (ultrapollicaribus) ; 

 corolla ut videtur rubro-purpurea recta, vexillo spathulato conduplicato, alis lan- 

 ceolatis carina baud incurva parum longioribus ; legumine ovato tumido obcom- 

 presso coriaceo velutino sutura dorsali septifera fore bilocellato. — Mexico, near 

 Perote, on sandy hillsides, Dr. Halstead, in herb. Torr. — Leaves and peduncles 

 about 9 inches long. Immature legumes nearly an inch in length. The shape of 

 the flower, with its narrow and strict petals, is remarkable. 



