Explanations of Plates 36 to 58, Genus Atriplex. 



Plate 52 — continued. 

 Alriplex julacea. (Drawn from material from San 

 Bartolome Bay, Lower California, 110297 

 UC.) 



(8) Twig of pistillate plant, X 1. 



(9) Leaf showing the sessile hastate base, X 8. 



(10) Two fruiting bracts, X 2. 



(11) Vertical section of the seed showing the superior 



position of the radicle, X 16. 

 Plate 53. 



Atriplex hymenelytra. 



(1) Branch of a pistillate shrub showing the char- 



acteristic foliage, the leaves silvery white 

 with a dense scurf, X 1. (Drawn from fresh 

 material from Yuma, Arizona.) 



(2) Habit sketch of normal mature plant as it grows 



in alkaline desert gravel at Yuma, X 0.066. 



(3) Inflorescence of a staminate plant, X 1. (Ma- 



terial from Inyo County, Calif., 110265 UC.) 



(4) Staminate flower, X 16. (Drawn from the 



same material as 3.) 



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



from the same material as 6.) 



(6) Portion of a pistillate inflorescence showing the 



fniiting bracts, X 1. (Material from Spht 

 Mountain, California, 110314 UC.) 



(7) Vertical section of the seed showing the supe- 



rior position of the radicle, X 16. (From 

 the same material.) 

 Plate 54. 



Atriplex lentiformis breweri. 



(1) Leafy fruiting inflorescence of a plant chiefly 



pistillate but with a few staminate glomerules, 

 X 1. (Drawn from fresh material from south 

 of Hollister, California.) 



(2) Habit sketch of a shrub growing near Ventura, 



California, just back of the beach; X 0.02. 

 Many of the plants are more symmetrical and 

 round-topped. 



(3) Three types of leaves common in coast plants, 



X 1. 



(4) Vertical section of the seed with inside view of 



the bract, X 16. 



(5) Fruiting bract from plant shown in fig. 1, X 2. 



(6) Two fruiting bracts from a single plant, the 



margins crenulate as in typica; X 2. (Ma- 

 terial from Ventura County, California.) 



(7) Two fniiting bracts from another plant, X 2. 



(Material from Ventura County.) 



(8) Staminate flower, X 16. (From the inflor- 



escence shown in fig. 10.) 



(9) Portions of inflorescence showing a mixing of 



the staminate and pistillate flowers, X 1. 

 (Drawn from fresh material from Ventura 

 County.) 



(10) Staminate inflorescence of a plant growing near 



the one shown in fig. 1, X 1. 

 Atriplex lentiformis typica. 



(11) Leaf, X 1. The shape is often similar to that 



of fig. 3. 



(12) Two bracts from the same plant showing the 



small size and characteristic margins of 

 typica, X 2. (Material from south of Bak- 

 ersfield, California.) 



(13) A bract from a plant in the area of typica but 



with the smooth margins of breweri, X 2. 

 (Material from south of Bakersfield, Calif.) 



Plate 55. 



Atriplex lentiformis griffithsi. (Drawn from the type 

 specimen, NY.) 



(1) Twig with fruiting bracts, X 1. The stems are 



angled as in subspecies torreyi. 



(2) Two fruiting bracts, X 2. 



Alriplex lerdiformis torreyi. (Drawn from fresh 

 material from the Truckee River Valley, 

 near Vista, Nevada.) 



(3) A leafy inflorescence from a staminate plant at 



the height of the flowering season, X 1. 



(4) A naked inflorescence from a pistillate plant 



taken late in the season, X 1. 



(5) Cross-section of stem showing the raised 



angles, X 4. 



(6) Habit sketch of a pistillate shrub, X 0.02. 



(7) Staminate flower, X 16. 



(8) Vertical section of the seed showing the supe- 



rior radicle, X 16. 



(9) Fruiting bracts, X 2. 

 Plate 56. 



Atriplex confertifolia. 



(1) A nearly leafless spiny branch in winter con- 



dition, X 1. (Material from Antelope Val- 

 ley, California.) 



(2) An exceptionally leafy branch of a pistillate 



plant in early summer condition, growing in 

 fairly good soil, X 1. (Material from wes- 

 tern Idaho.) 



(3) A less foliaceous branch from a plant in dry 



soil, X 1. (Material from southern Idaho.) 



(4) Branch of a staminate plant showing the 



glomerules, X 1. (Drawn from fresh ma- 

 terial from Antelope Valley, Cahfomia.) 



(5) Habit sketch of a normal plant, X 0.07. 



(6) Fruiting bract, X 2. (Material from Antelope 



Valley, Cahfomia.) 



(7) Fruiting bract, X 2. (Material from Naturita, 



Colorado, 205353 UC.) 



(8) Vertical section from bract shown in 7, X 16. 



(9) Staminate flower from branch shown in 4, X 16. 



(10) Leaf from the type of A. collina (i. e., minor 



variation 1, p. 339), X 1. 



(11) Two fruiting bracts from the same type as 



10, X 2. 

 Plate 57. 

 Atriplex parryi. (Drawn from material from Ante- 

 lope Valley, California, the type locality, 

 7064 and 7113 UC.) 



(1) Twig showing the spiny habit and cordate 



leaves, X 1. The shape of the shrub is 

 similar to that shown of confertifolia in plate 

 56, fig. 5. 



(2) Bracts showing variation in the shape of the 



base, X 2. 



(3) Vertical section of a seed showing the superior 



position of the radicle, X 16. 



(4) Staminate flower, X 16. 



Atriplex spinifera. (Drawn from fresh material from 

 western Fresno Coimty, Cahfomia, except 

 figs. 8 and 9.) 



(5) Branch showing the autumn condition, the 



leaves mostly fallen but some of the fruiting 

 bracts still persisting; X 1. 



(6) Branch showing the more leafy summer con- 



dition, X 1. 



(7) A fruiting bract, X 2. 



