] 02 A- Biand. — Hydropliyllaccae. 



Systema speciei. 



A. Cincinni fructiferi 6 — 10 cm longi. 



a. Petioli laminis foliorum subaequilongi var. a. condensata. 



b. Petioli foliorum basalium multo longiores quam laminae 

 oblongo-lanceolalae, integerrimae subvar. Hansenii. 



B. Cincinni fructiferi 10 — 16 cm longi var. b. caudata. 



Var. a. condensata Brand in Univ. California Publ. Bot. IV. (1912) 220. 



Die häufigste Form. Trinity County: Ketten River Valley (Blankinship). Mendo- 

 cino County: Im Tale des Eel Biver (Blankinship; Purpus). Sonoma County: Geyser 

 Canon (Möllendorf). Napa County: Mount St. Helena (Baker n. 2604), am Napa 

 River (Jepson). Solano County: häufig (z. B. Heller n. 5408). Marin County: Mount 

 Tamalpais (T. S. Brandegee). Contra Costa County: Port Costa (T. S. Brandegee). 

 Alameda County: Oakland (Hillebrand). — Monterey County: Jassajara Hot Springs 

 (Eimer n. 3205). Santa Barbara (Eimer n. 3919; eine Übergangsform zu P. magcl- 

 lanica bernardina). San Luis Obispo CouDty (Jones). San Diego County (Palmer 

 n. 246). — Amador County (Hansen n. 1283 in Herb. Berlin). Yosemite Valley 

 (Bolander). 



Subvar. Hansenii Brand in Univ. California Publ. Bot. IV. (1912) 220. 



Amador County: Irishtown (Hansen n. 1283 in Herb. Boissier). 



Var. b. caudata Brand 1. c. 



Yolo County (Baker n. 2980). Contra Costa County: Antioch (T. S. Brandegee). 

 Santa Clara County: Los Gatos (Heller n. 7415), Coyote Creek (Jepson). — Eldorado 

 County (K. Brandegee). — San Bernardino Mountains (Parish n. 5940). 



57. P. irritans Brand, Beitr. Hydroph. (1911) 7. — Annua, hirsuta, a basi ra- 

 mosissima, caulibus prostratis vel ascendentibus, 7 — 17 cm longis. Folia breviler 

 petiolata, integerrima, elliptica vel oblonga, utrinque attenuata. Cincinni numerosi, per 

 totam plantam dispositi, densiflori, floribus sessilibus, capsulis brevissime pedicellatis. 

 Sepala linearia, obtusa, longiuscule et patenter pilosa, 3 — 5 mm longa; corolla campanu- 

 lata, 4 — 5,5 mm longa, lobis latis brevibus; stamina paulo supra basin affixa, parce 

 barbata, corolla sublongiora; squamae corollinae semiovales, Stylus cum ovario 7 mm 

 longus, paulo supra medium bifidus, ramulis quam parte integra parce pilosa bre- 

 \ioribus. Capsula calyce fruetifero duplo fere brevior; semina oblonga, brunnea, foveo- 

 lata; embryo gracilis 1 mm longus. 



Kalifornien: Auf der nördlichen Sierra Nevada, in etwa 2000 m Höhe. — 

 Lassen County: Pine Creek (Baker and Nutting). I'lumas County: Big Meadows 

 (Austin). Sierra County : Little Truckee Biver Hall und Babcock n. 4523; Original). — 

 Blüht im Juli. — Eine Zwischenform zwischen Phacelia magellanica frigida und 

 P. humilis. 



58. P. humilis Torr, et Gray in Explor. Mississippi Biver II. (1855) 122 t. 7; 

 Wats. Bot. King (1871) 250; A. Gray in Proc. Amer. Acad. X. (1875) 318, Syn. Fl. 

 II. 1. (1878) 159; Howell, Fl. N. W. America I. (1901) 4 68; H. M. Hall in Zoe V. 

 (1908) 265; Davidson in Muhlenbergia IV. (1908) 67. — P. inconspicua Greene in 

 Erylhea III. (1895) 24, ex descriptione. — Annua, humilis, 4 — 20 cm alta, glanduloso- 

 viseida, simplex vel a basi ramosa. Folia infima opposita, caetera alterna, breviter 

 petiolata, valde variabilia: nunc obovata vel elliptica nunc oblonga vel fere linearia, 

 apice obtusa, basi nunc euneata nunc rotundata. Cincinni axillares et terminales, 

 solitarii vel gemini, densiflori, fructiferi valde elongati, pedicellis brevissimis; sepala 

 linearia, obtusa, glandulosa, 3 — 4 mm longa; corolla coerulea, campanulata, 4 — 5 mm 

 longa; stamina nuda, exserta; squamae parvae, breviter trianguläres; ovarium globosum 

 breviter pilosum; Stylus inferne parce ciliatus, fere usque ad basin partitus, calyce plus 

 sesquilongior. Capsula ovoideo-acuta calyce fruetifero fere 6 mm longo duplo fere 

 brevior; semina brunnea ovoidea, alveolata; embryo semine vix brevior, 1,5 mm longus, 

 cotyledonibus fere orbicularibus radicula duplo brevioribus. 



