Novitates Boreali-Americanae. III. 3 
Collected at Sisson, northern California, 13. August, 1908, by E. 
B. Copeland; the specimens well past flowering. Foliage more than 
usually dissected, recalling that of certain North American species of 
Geranium yet of very thin texture and quite glabrous. By its tortuous 
stem and petioles the species would seem disposed to trail over larger 
plants. 
28. Aconitum tricorne Greene, nov. spec. 
Planta procera, caule tereti gracilenta apicem versus ramosa, ramis 
patentibus plus minus tortuosis et sparsim floriferis; folia infima ignota, 
superiora brevissime petiolata, limbo profunde 5-partito, segmentis sub- 
cuneatis supra medium incise lobatis, lobis elongatis acuminatis; flores 
vix mediocres caerulei, sepala anteriora angusta, valde elongata et liguli- 
formia, galea elata subcalcariformi, rostro brevi latiusculo vix prominente; 
folliculi sparsim pubescentes, fere ab imo basi recurvo-patentes. 
This fine species, so well marked by its strongly recurved-spreading 
follicles is known to a certainty by only. a single sheet in the U. S. 
National Museum (sheet no. 286023), the specimen consisting of the 
whole branching summit of a large plant in flower and fruit. It is from 
Warner Valley, Lassen's Peak, northern California, by Mrs. R. M. 
Austin, Aug., 1896. Other specimens of aconite from the same district, 
but in flower only, seem to differt from this both as to habit, foliage 
and flowers. 
24. Aconitum Hanseni Greene, nov. spec. 
Caulis erectus firmus simplex, verisimiliter metralis, teres, inferne 
glaber, supra medium  villosulus; folia caulinia 5-partita, segmentis 
simpliciter incisis, laciniis subfalcato-acuminatis, omnia tenuia, supra 
obscure pubescentia, vel manifestim breve petiolata vel subsessilia, omnia, 
etiam inferiora, bulbillos satis magnos ex axillis petiolorum promentia; 
racemus simplex circa 12-florus; flores mediocres (25 cm alti) saturate 
caerulei, sepala anteriora ovata acuta, galea subconica obtusa, in rostrum 
sat magnum deorsum spectantem desinens; ovaria puberula. 
Known only from Hope Valley in the Californian Sierra Nevada, 
as collected by George Hansen, 1892. Notable as bearing a conspi- 
cuous and rather large bulblet in the axil of each cauline leaf, but none 
at all in the inflorescence, this being a rather long and not lax raceme, 
The locality is in Amador County, California. The type specimen is 
in my private herbarium. 
25. Aconitum Helleri Greene, nov. spec. 
Planta praealta caule robusto fistuloso leviter striato inferne simplici 
glabro, superne patentim ramoso, ramis singulis racemoso-multifloris; 
folia supra saturate viridia, subtus paullo pallidiora, utrinque glabra, 
profunde 5-partita, segmentis rhomboideis, apicem versus incisis, lobis 
brevibus acutis; flores pro planta parvi, violacei, in racemos angustos 
subspicatos dispositi; sepala anteriora ovalia obtusa, galea brevis, sub- 
conica, rostro latiusculo vix prominente; folliculi pubescentes, superne 
planissime divergentes. 
1* 
