﻿56 PLANTS FENDLERIAN.E. 



Santa Fe Creek ; August. Although destitute of fruit, the specimen well agrees with 

 the European plant. Perhaps it is also the Sium pusillum of Nuttall. I have the same 

 plant, in flower only, from Michigan. 



272. Archemora Fendleri (sp. nov.) : radice fasciculato-tuberosa ; caule simplici ; 

 foliis pinnatis 5 - 7-foliolatis ; petiolis basi spathaceis ; foliolis oblongo-ovatis obtusis vel 

 fol. supremorum lanceolatis inciso-serratis utrinquc viridibus ; involucellis nullis; fructibus 

 parvulis angusto-alatis. — Margins of Santa Fe Creek, in fertile soil ; June, July. — This 

 is clearly a congener of Archemora rigida, although it wants the involucels. The root 

 consists of three or four oblong, fasciculated, and pendulous tubers about an inch long. 

 Stem slender, one to two feet high. Cauline leaves two or three. Leaflets three fourths 

 of an inch to an inch and a half long ; those of the radical and lower cauline leaves ovate 

 or oblong, obtuse ; all incisely serrate throughout ; not barely 2 -3-toothed, as in A. rigida. 

 Umbel small. Fruit hardly two lines in length, oval ; the wing-like margins narrower 

 than the disk. Vittae of the commissure four, of which two are shorter, as is often the 

 case in A. rigida. 



273. Heracleum lanatum, Michx. With the preceding ; June, July, in flower. 



y 274. Cymopterus Fendleri (sp. nov.) : pumilus, subcaulescens ; foliis viridibus 

 2-3-pinnato-partitis ambitu oblongis vel ovato-lanceolatis pedunculos excedentibus, pin- 

 nis segmentisque 5-7 oblongis obtusis incisis superioribus confluentibus, rachi latiuscula; 

 umbella glomerata pauciradiata ; involucro obsoleto ; involucellis unilateralibus herbaceis 

 3-5-partitis flores luteos sequantibus, laciniis oblongis; fructibus plerumque 7-alatis, alis 

 membranaceis planis. — Gravelly hills, Santa Fe ; April to May. — Stem one to two 

 inches long, rising from a thickened perpendicular root or caudex. Petioles and pedun- 

 cles about the same length, minutely pulverulent-glandular. Leaves thickish, not glau- 

 cous, the lamina of the larger two inches long ; the pinnae and segments little crowded. 

 Flowers crowded in the monoecious umbellets, on very short pedicels ; the central ones 

 staminate ; the marginal pistillate. The fruit is not mature, but nearly resembles that of 

 no. 275 : one of the mericarps bears two (usually unequal) wings on the back ; the other 

 only one. It is a well-marked species. 



•/ Tib. C. montanus, Nutt. in Toit. §• Gray, Fl. 1. p. 624. With the preceding, 

 in one locality only ; April, May. — The specimens accord very well with an authentic 

 one from Nuttall (in herb. Torr.), except that the foliage is more glaucous, and the seg- 

 ments of the leaves more crowded, in these respects more nearly resembling C. glaucus. 

 But the species is well characterized by the conspicuous scarious and silvery white, some- 

 what cyathiform involucre and involucels, marked with greenish ribs, each about 5-part- 

 ed, the involucels into obovate and obtuse entire divisions, the involucre into similar or 



