TESTS OF IOWA WEED SEEDS 
531 
MICROCHEMICAL TESTS FOR STARCH, PROTEIN AND FAT— Continued 
Name 
Starch 
Protein 
Fat 
Oenchrus tribuloides 
large and small 
some 
little 
abundant 
Echinochloa crus-galli 
abundant small 
polygonal simple 
some 
little 
Elymus canadensis 
simple abundant 
some 
little 
Hordeum jubatum 
simple abundant 
some 
little 
*Lolium temulentum 
small simple 
some 
little 
Setaria glauea __ 
abundant small 
polygonal simple 
some 
little 
Setaria viridis 
abundant small 
polygonal simple 
some 
little 
Setaria Italica 
abundant small 
polygonal simple 
some 
little 
Urticaceae 
Cannabis sativa 
none 
abundant 
abundant 
tjrtica gracilis - 
none 
abundant 
abundant 
Amaranthacese 
Amaranthus blitoides 
very small grain 
abundant 
some 
little 
Amaranthus graecizans 
very small grain 
abundant 
some 
little 
Amaranthus retroflexus . 
very small grain 
abundant 
some 
little 
Poiygonaceee 
Polygonum aviculare __ 
small starch 
grain abundant 
small 
little 
Polygonum convolvulus- 
grains variable in size 
small 
little 
Polygonum erectum _ _ _ - 
grains abundant 
small 
little 
Polygonum Persicaria __ _ — - 
apparently simple 
abundant 
small 
little 
Polygonum Pennsylvanieum 
compound and , 
abundant 
small 
little 
Rumex acetosella ___ __ - 
abundant simple 
some 
little 
Rum ex crisDus __ __ 
abundant simple 
some 
little ' 
Nyctaginacese 
Oxybaphus nyctagineus __ __ 
abundant simple 
abundant 
some 
-OaT-yophyllacese 
Saponaria officinalis 
compound abundant 
some 
little 
Silene antirhina _ _ - _ 
small 
some 
little 
Silene virginica _ _ 
small 
some 
little 
Agrostemma githago 
small 
some 
little 
Ranunculaeeee 
* Ranunculus arvensis _ 
none 
abundant 
some 
^Ranunculus abortivus _ _ _ _ 
none 
abundant 
some 
Berberidacese 
Berberis vulgaris 
none 
abundant j 
some 
Chenopodiacese 
Salsola Kali var. tenuifolia _ _ 
none 
abundant j 
some 
Chenopodium album 
abundant small 
some 
little 
Cruciferse 
Brassica arvensis _ ___ _ 
none 
abundant 
abundant 
Brassica nigra _ _ 
none 
abundant | 
abundant 
Barbarea vulgaris __ _ 
none 
abundant 
abundant 
Camelina sativa __ _ 
none 
abundant 
abundant 
Capsella Bursa-pastoris 
none 
abundant 
abundant 
Lepidium apetalum 
none 
abundant 
abundant 
Lepidium virginicum __ _ __ 
none 
abundant 
abundant 
Sisymbrium officinale ___ __ ■ _ 
none 
abundant 
abundant 
Sisvmbrium altissimun 
none 
abundant 
abundant 
Oomnositse 
Ambrosia artemisiifolia. 
none 
abundant 
abundant 
Ambrosia trifida ___ 
none 
abundant 
some 
Arctium major 
none 
abundant 
some 
*Centaura Oyanus ___ _ . 
none 
abundant 
some 
Cirsium lanceolatum __ 
none 
some 
little 
Lactuca canadensis __ 
none 
some 
little 
Lactuca scariola 1 
none 
some 
little 
Rudbeckia hirta _ 
none 
some 
little 
Taraxacum officinale 
none 
some 
little 
Scrophulariacese 
Scrophularia marilandica 
none 
abundant 
some 
Yerbascum Thapsus 
none . 
abundant 
some 
