100 UNITED STATES AND MEXICAN BOUNDARY. 



Hemizon 



Sulih. p. 30. Santa Barbara and Sa 



fornia; ScJiottj Fitch 

 mode of growth. M 



of 1846; as No. 361 

 herb. Hook ; (of Gam 



common Californ 



marked E and S in his coll. 

 H. fasciculata of NuttalL in 



H. ramosissima. The sessile or stipitate glands are sometimes abundant^ but not rarely wanting 

 or nearly so. I may remark that to H. angustifollaj DC,^ (which has no pappus at all, at least 

 in Douglas's specimens,') belongrs the H. multicaulis. HooJc. & Arn. JBot. Beech. Vov. SiwuL. t}. 



H. decumbens, Nuit 



specim 



flowers show a minute pappus. But No. 179Y of Hartweg's collection, referred by Mr. Bentham 



toH 

 Nuit 



H. corymbosa (Hartmannia corymbosa, DC.) H 



DC 



of 



Whippl 



Eeport.* 



Calycadenia (Osmadenia) tenella, Torr. d Gray, Fl. 2, ^. 402. Osmadenia tenella, Nutt. 

 Dry places rear San Diego^ California; Parry, etc.; June. Subjoined are the characters of 

 two new species, from Fremont's Californian collection of 1846. f They belong to Nuttall's 

 Osmadenia, but have the glands of Calycadenia on the floral and young fascicled leaves, and 



*Besides H. Fitchii, recently published in Whipple's Report, there is another extremely well marked species of Hemizonia 'n 

 Colonel Fremont's collection, the characters of which are subjoined : 



Hemizonia vtrgata (sp-nov.); s^ibgJabra ; caulibus e radice annua ramisve simplicibus gracilibus ; foliis linearibus, inferi- 

 oribus inciso-dentatisbasi lor ge attenuatis, superioribus integerrlmls, summis minimis apice glandulusu-truncatis ; capitulis ob- 

 longisiu ax His solilariis fubsessilibus vel plerumque ramulos breves foliosos desinentibns racemum virgatum efhcientibiis ; invol" 

 ucri squam's circiter 5 ovalis membranaceis cum paleis extimis receptaculi glandulis stipitatisj mollibus dorso muricatis ; floribus 

 ut videtur luteis, radii 5 ligula cuneato-rotunda apice triloba, disci 10 sterilibus, singulis palea oblonga glanduloso-mucronata 

 amplexatis epapposis ; acheniis radii fertilibns obovatis l^vibus basi substipilatis apice intus breviter rostratis,— California, prob- 

 ably on the Sacramento-, Col. Fremont, — Stems a foot or more high. Lower cauline leaves two inches long, the upper ones an 

 inch or less in length and barely a line wide ; those fascicled in the axils or crowded on the floral branchlets 1-2 lines wide, 

 spreading ; their truncate apex glandular. Heads 3 lines long. Scales of the involucre ovate, cymbiform, half inclosing the 

 fertile achenia, glabrous, beset externally with long and soft glandular-tipped but truncate spreading processes. Ligules 2 lines 

 long and ihe same width, on a glandular tube of a line in length- Disk -flowers slightly glandular, their infertile ovaries glab- 

 rous destitute of pappus. Receptacle chaffy thonghout ; the palese distinct, membranaceous. 



I Calycadenia Fremontii (sp. nov-): caule humili supeme parce pariculato-ramoso et hirsute ; foliis angusle linearibus sca- 

 bris basi setoso-hispidis, caulinis eglandulosis, floralibus apice seepe glandulam claviformem breviter stipitatam gerentibus ; capitulis 

 solitariis terminalibus axillaribusque subsessillibus ; ligulis 5-7 tripartitis, segmentis tubulo brevissimo glabra 2-3-plo longi- 

 oribus ; disco circiter 20-floro ; paleis receptaculi 12 et ultra oblongis obtusis vix glutinosis connatis; lobis coroUarum disci ovatis ; 

 acheniis radii laevibus utrinque obtusis, disci hirsutulis pappo 10-pah,'aceo (paleis alternissubulato-productis) aequilongis. — Cali- 

 fon.ia, (the particular station not recorded ;) CoL Fremont. Stems a span high, from an annual root, erect, rather slender ; the 

 branches are not glandular nor glutinous. Cauline leaves an inch or more in length, the lower opposite. Heads few, larger, 

 and with many more flowers than in C. tenella ; also with much ampler ligules, (though the tubular portion is very much 

 shorter, ) their obovate or oblong segments 3 lines long. Nor are the tinged and perfectly smooth and even ray achenia at all 

 apiculate at either end. The pappus of the (apparently fertile) disk-achenia resembles that of C. tenella, its longer and subulate 

 scales being on^y half the length of the corolla, and not longer tiian the achenium itself. 



Calycadenia fauciflora {^p. nov. ) : caule paniculato-raraoso glabello ; ramis floriferis diff'usJB filiformibus flexuosis capitula 

 sclitaria subsessilia ad nodes singulos gerentibus; foliis anguste linearibus scabris inferne setoso-ciliatis, floralibus cum iis ia 

 axiilis fasiculatisbrevibusglandulaclaviformi supcratis ; radio uni-ligulato, lobis ligulip tripartitiE tubulo duplolongioribus ; disco 



