214 Plantce Lindheimeriance. 



Guadaloupe and Pierdenales. Comanche Spring. April. 

 " A rough, unsightly shrub, from 4 to 6 feet high ; only the 

 young shoots show any inclination to climb or twine. Flow- 

 on the three or four last joints, one or two in each axilla. Flowers minute, 0.3 of a 

 line wide and 0.4 long, on very short, enclosed pedicels, which apparently are elon- 

 gated immediately after flowering. Pedicel of the young fruit (ripe fruits not seen) 

 half the length of the fruit. 



"2. A. Americanum (Nutt.): caule ramisque fasciculatis teretibus gracilibus 

 patulis ; squamis truncatis in vaginulas dilatalas cupuliformes connatis ; floribus 

 masculis axillaribus terminalibusque nee spicatis. — Oregon, on Pinus, Nuttall. — 

 Considerably resembling the slender forms of var. «. of the next species, but 

 smaller, slenderer, and at once distinguished by the terete branches, the fasciculated 

 branchlets, and much dilated vaginulse. Female plant and fruit unknown to me. 



" 3. A. campylopodum {n. sp.) : ramis oppositis seu dichotomis compresso- 

 quadrangulatis ; squamis truncatis breviter cuspidatis in vaginulas subcylindricas 

 cupuliformes connatis; floribus axillaribus terminalibusque plerumque in spicam 

 simplicem s. compositam aggregatis, masculis singulis vel binis ternisve, fcemineis 

 in quavis axilla singulis ; baccis exserto-pedicellatis patulis s. recurvis. — Var. a. 

 macrarthron: caule compresso vix angulato ; ramis plerumque gracilioribus ; 

 articulis plus minus elongatis ; floribus foemineis sparsis et in ramulis brevibus 

 paucis seu in spicas simplices aggregatis. — /?. ? brachyarthron : caule tereti ro- 

 busto ; ramis robustis articulis abbreviatis diametro vix longioribus ; floribus 

 foemineis in spicas densas compositas aggregatis. — I have comprised under this 

 name different forms, which, when better known, will probably have to be separated 

 as distinct species. My specimens are so incomplete that I can not even satisfactorily 

 determine whether the different forms which constitute the first of the two varie- 

 ties will finally be retained under one species. — Var. «. has been found in Oregon 

 (only on Pinus ponderosa), Geyer; in New Mexico (only on Pinus edulis,) Fendler, 

 282; and in California, Doug-las. — The specimens from New Mexico (only male 

 and female flowers seen) have short female spikes, bearing 2 to 5 flowers, or the 

 flowers are scattered on the branchlets : the flowers are elliptical, 0.4 lines wide and 

 0.5 long, almost sessile. Geyer's Oregon plant (I have seen only a fruiting speci- 

 men) has more elongated many-flowered female spikes ; the flowers apparently 

 ovate ; pedicel hardly one third the length of the (not quite ripe) fruit. The Gali- 

 fornian plant (male and female flowers and fruit) is much stouter : male flowers 

 twice as large as in the specimens from New Mexico, and not rarely 4-parted ; 

 female flowers in more elongated spikes, elliptico orbicular, small, 0.4 to 0.5 line in 

 diameter; the recurved pedicel more than half the length of the fruit, which is 2 

 lines long and 1,3 wide. — Var.? /S. has been collected in Mexico by Coulter. 

 I can hardly doubt it to be a distinct species ; but my means to distinguish it are at 

 present too limited. The stout terete stem, the short joints which are hardly longer 

 than wide, the crowded compound or panicled spikes which resemble those of the 

 following species, and the larger ovate (not elliptical) flowers appear to indicate 

 specific distinction. Fern, flowers 0.6 lines wide and 0.8 lines long : fruit 2 lines 

 long and 1.2 lines in transverse diameter, the pedicel more than half as long as the 

 fruit : male flowers not seen. 



"4. A. cryptopodum (n. sp.): caule ramisque acute quadrangulatis robustis 

 articulis brevioribus ; squamis truncatis in vaginulas cupulatas connatis ; floribus in 

 spicas densas compositas congestis, fcemineis ovatis in quavis axilla singulis ; 



