too CONTRIBUTIONS TO WESTERN BOTANY NO. IS 



(Thurberf) fs scarce and small on the hill. It has 13 ribs and black 

 spines. No Echinacactus so far. There are two Euphorbias, one is an 

 intricate shrub with small branches, and is 1-3 feet high, with pulp on 

 the stems soft and juicy, hard to break off, liable to peel off from the 

 central wood. This has the same habit as the bigger one with shiny 

 leaves (Jatropha), with yellow and papery bark which hns no white sap 

 and is 3-6 feet high, leaves turning yellow, no fruit or flowen This lat- 

 ter I took at first to be E. misera. Thpn th^rp iq a lnnfT.lpa.vpd L' 



cium 



red berries, 2-3 feet high, also a Zizyphus-like Dalea, and 



them spineless. 



legum 



ens 



that I think is the screw-bean, but no pods. Encelia cordifolia ? is very 

 common on the hill, also Cassia Covesii ? a shrub with very many stems 



too 



is look ; 

 growing 

 growing with 



Allionia incamata is common. Altemanthera lanuginosa is commcm. 

 There is a Perityle, a shrub, a few inches to two feet high, with yellow 

 and scattered flowers growing in clefts of rocks. Shrubbery dense on the 

 hill. The marble is worn smooth, is granular, and mottled. Saw also in 

 the city two cultivated Echino-cactus, 



New Year's mine, 1,150 feet altitude, 20 miles southeast of Hermo- 

 >^iT]o on the eastern side of a lime mountain. The pitch to the west is 

 30-45 degrees. Quartz-porphyry on the north of the hill, but the forma- 

 tion IS mostly granular lime. Vegetation is about the same as at Hermo- 

 sillo, but with a few new bushes. There is a small tree with white and 

 fiakv bark, which they call birch. It has a flat top and 



stems 



grows 



, , - . . ~ y - - —^t--- — " .-v^o^o, and has wand-like 



h'-anches waving in the wind. It is no doubt Lysiloma Candida. Then 

 t.icre ,s another similar tree but stiffer, but deciduous leaved, and many 

 branches and a pyramid outline that evidently produces shellac, so it 

 must be a Bursera. There are two species of this kind with pinnate 

 leaves and has a round nut or berry. I saw also here Tanusia. Lantana, 

 naJea flat white Euphorbias, two of them annuals. One herb with pin- 

 nate leaves like a Bidens, probably a Cosmos. Near the 'tannery near 

 Hermosillo grew Wislizenia as an herb about 4 feet high, three species of 

 nouteloua. one of them hirsuta and scarce, also three annuals, a tall one 

 anci a low one among them also one like curtipendula. Saw one specimen 

 of Fouquiena splendens, also F. peninsularis in full leaf, and in bloom. 



V^ in. tT,Tri ° r,^''c"f ' '^^^^^^"' ^"^g^^J' ^nd bottle-brush, occur, 

 cWnn.! -K ' ^'c' ^'S°""- '^^^ bottl^brush often grows in large 

 vlr^l^ n. ' ^x^.V' T^^^' *^^ °*^^ ^^« 15- Vegetation mostly 

 : :Lf"wML„:^ *! L^°^^^^-- -^-I - f-quent, als^ some Setaria 



glauca. Wislizem-a grows erect and th.n ^a' • 7 

 branched and rounded^op, fXe'LSrth^Stt ^ J^ 



a m 



uch 



til" il'iV± ,:?''''''^ }'''^-\ -oon from the west, no .ini. 



Hot before. 



aculeata 



