Explanations of Plates 36 to 58, Genus Atriplex. 



Plate 48 — continued. 

 Atriplex fruticulosa. (Drawn from a living specimen 

 grown at Berkeley, California, the original 

 seed from the San Joaquin Valley, except 9.) 



(5) An ascending branch showing leaves, fruiting 



bracts, and staminate clusters, X 1. 



(6) Staminate flower, X 16. 



(7) Vertical section of the seed showing the superior 



position of the radicle, X 16. 



(8) A series of three fruiting bracts, X 2. 



(9) A series of three fruiting bracts from the type 



specimen, X 2. (Herb. Jepson.) 

 Atriplex coulteri. (Drawn from material from La 

 Jolla, San Diego County, California.) 



(10) A branch showing the leaves, fruiting bracts, 



and staminate clusters, X 1. 



(11) Staminate flower, X 16. 



(12) Two fruiting bracts, X 2. 



(13) Vertical section of the seed showing the superior 



position of the radicle, X 16. 

 Plate 49. 

 Atriplex decumbens. (Drawn from fresh material 

 from San Diego County, California.) 



(1) Branch of a prostrate pistillate plant, X 1. 



(2) A series of three fruiting bracts, X 2. 



(3) Vertical section of the ovary showing the 



superior position of the radicle, X 16. 



(4) Branch of a staminate plant, X 1. 



(5) Staminate flower, X 16. 



Atriplex matamorensis. (Material from southwestern 

 Texas, Palmer 11601 US.) 



(6) Tip of a branch from a pistillate plant, X 1. 



(7) Fruiting bracts, X 2. 

 Atriplex barclayana typica. 



(8) Branch and inflorescence of a staminate plant, 



X 1. (Material from Estaban Island, Gulf 

 of California, Johnston 3190 UC.) 



(9) Staminate flower from 8, X 16. 



(10) Branch of a pistillate plant with bracts, X 1. 



(Material from Isla Partida, Gulf of Cali- 

 fornia, Johnston 3228, UC.) 



(11) Three thick fruiting bracts of typical har- 



clayana, X 2. (From the same plant as 10.) 



(12) Two fruiting bracts, compressed as in subsp. 



palmeri; X 2. (From the same plant as 

 10 and 11.) 



(13) Vertical section of a typical thick bract, X 16. 

 Atriplex barclayana lurida. (From type, 110251 UC.) 



(14) Leaves showing characteristic dentation, X 1. 



(15) A series of three fruiting bracts, X 2. 

 Atriplex barclayana sonorae. (Drawn from the type 



material, 635444 US.) 



(16) A series of three fruiting bracts, X 2. 

 Atriplex barclayana dilatata. (Material from San 



Benito Island, Anthony 269 UC.) 



(17) A series of four fruiting bracts, X 2. 

 Plate 50. 



Atriplex obovata. (Drawn from fresh material from 

 northwestern New Mexico.) 



(1) Branch of staminate plant, X 1. 



(2) Staminate flower, X 16. 



(3) Branch of pistillate plant, X 1. 



(4) A leafy sterile shoot, X 1. 



(5) Fruiting bract, X 2. 



(6) Vertical section of the seed showing the superior 



position of the radicle, X 16. 



(7) Habit sketch of a staminate plant, X 0.12. 



Plate 50 — continued. 



(8) Habit sketch of a pistillate plant, X 0.12. 

 Atriplex acanthocarpa. (Staminate material from 



San Luis Potosi, 110337 UC; pistillate 

 material from Torreon, Coahuila, 1 10223 UC.) 



(9) Staminate inflorescence, X 1. 



(10) Staminate flower, X 16. 



(11) Branch of a pistillate plant, X 1. 



(12) Fruiting bract, X 2. 



(13) Another fruiting bract from the same plant 



but showing more laciniate margins and 

 appendages, X 2. 



(14) Vertical section of the seed showing the superior 



position of the radicle, X 16. 

 Plate 51. 

 Atriplex nuttalli gardneri. (Drawn from fresh material 

 from Point of Rocks, Wyoming.) 



(1) Erect leafy stem with fruiting bracts, X 1. 



(2) Tip of a branch from a staminate plant, X 1. 



(3) Staminate flower, X 16. 



(4) Vertical section of the seed showing the superior 



position of the radicle, X 16. 

 Atriplex nuttalli typica. (Drawn from fresh material 

 from Green River, Utah, and Grand Junction, 

 Colorado.) 



(5) Leaf and fruiting stem of pistillate plant, X 1. 



(6) Branch of another plant showing a staminate 



inflorescence, X 1. 



(7) Habit sketch, X 0.1. 



(8) An unusual type of fruiting bract, representing 



a primitive form; X 2. 



(9) A common type of bract with numerous 



cristate appendages, X 2. 



(10) Staminate flower, X 16. 



Atriplex corrugata. (Drawn from material and photo- 

 graphs from Green River, Utah, the staminate 

 inflorescence from Gunnison River, Colorado.) 



(11) Leafy branches and spikes of fruiting bracts, 



X 1. 



(12) Inflorescence of a staminate plant, X 1. 



(13) Staminate flower, X 16. 



(14) Fruiting bracts showing the flat-appendaged 



faces and the broad terminal lobe, X 2. 



(15) Vertical section of the seed showing the superior 



position of the radicle, X 16. 



(16) Habit sketch, X 0.1. 

 Plate 52. 



Atriplex polycarpa. (Drawn from fresh material 

 from Tehachapi Pass, Calif ., except 3, 6, and 7.) 



(1) Branch of a pistillate shrub, the leaves still 



adhering; X 1. 



(2) End of a branch showing the pistillate inflores- 



cence, X 1. 



(3) Staminate flower, X 16. (Material from 



Bakersfield, California, 7097 UC.) 



(4) Vertical section of the seed showing the 



unusual basal position of the plumule, the 

 three embryos examined all exhibited this 

 peculiarity; X 16. 



(5) A series of five fruiting bracts, the lower row 



smooth, from one plant, the other two from 

 another plant; X 2. 



(6) A series of three fruiting bracts from the type 



specimen of A. curmdens (minor variation 

 3), X 2. 



(7) A series of three fruiting bracts from Tucson, 



Arizona, (128246 UC) of a form resembling 

 curvidens; X 2. 



