MISC. PUBLICATION 200, U. S. DEPT. OF AGRICULTURE 



1045 



Spartina stricta — Con. Page 



maritima 958 



townsendii 508 



Spelt 243 



Sphaerium lacryma 847 



Sphaerocarpa, group of Panicum 664 



Sphenopholis 283, 960 



annua 962 



aristata 962 



filiformis 285, 960 



glabra 961 



hallii 976 



intermedia 283, 960 



interrupta 976 



longiflora 285, 960 



nitida 285, 960 



glabra 961 



obtusata 283, 961 



lobata 961 



purpurascens 962 



pubescens 961 



pallens 285, 286, 960, 962 



longiflora 960 



major 960 



palustris 976 



flexuosa 976 



pennsylvanica 976 



flexuosa 976 



pubescens 962 



robusta 962 



Spider grass 465 



Spike bent 347 



dropseed 427 



muhly 387 



pappusgrass 227 



oat 302 



trisetum 289 



Spikelet, structure of 7 



Spirochloe paniculata 948 



Spirotheros melanocarpus 883 



Sporobolus 413, 962 



airoides 413, 428, 962 



wrightii 966 



altissimus 966 



minor 966 



angustus 964 



arenaceus 899 



argutus 425, 965 



aristatus 901 



arizonicus 964 



arkansanus 965 



asper 417, 962 



drummondii 962 



hookeri 417, 962 



pilosus 417, 962 



aspericaulis 905 



asperifolius 388, 899 



brevifolius 899, 900 



major 899 



attenuatus 417, 962 



auriculatus 388, 899 



berteroanus 418, 965 



bolanderi 941 



brevifolius 900, 905 



buckleyi , 428, 963 



canovirens 418, 963 



clandestinus 418, 963 



compositus 962 



compressus 390, 907 



confusus var. aberrans 906 



contractus 427, 963 



cryptandrus 413, 425, 963 



flexuosus 963 



giganteus 963 



involutus 963 



robustus 963 



strictus 963 



vaginatus 963 



curtissii 421, 963 



cuspidatus 900 



depauperatus 905 



filiformis 901 



deserticolus 899 



diffussimus 962 



distichophyllus 899 



domingensis 425, 963 



drummondii 417, 962 



ejuncidus 964 



elongatus 418 



Sporobolus — Con. Page 



filiculmis 906, 965 



filiformis 901 



flexuosus .413, 427, 963 



floridanus 421, 963 



curtissii. 963 



giganteus 428, 963 



gracilis 423, 964 



gracillimus 901 



heterolepis 420, 963 



indicus 413, 418, 963, 965 



inflatus 900 



inordinatus 963 



interruptus 413, 420, 964 



jacquemontii 963 



jonesii 902 



junceus 423, 964 



lamarckii 964 



ligulatus 404, 900 



littoralis. 420, 966 



elongatus 965 



longifolius 962 



macer 417, 964 



microspermus 374, 904 



minor 965 



minutissimus 904 



muhlenbergii 981 



nealleyi 427, 964 



neglectus 417, 964 



ovatus 965 



ozarkanus 417, 964 



patens 415, 964 



pilosus 417, 963 



poiretii 418, 964 



pulvinatus 415, 965 



purpurascens 423, 965 



pyramidatus 424, 965 



racemosus 907 



ramulosus 374, 907 



repens 905 



richardsonii 905 



sabeanus 965 



sacatilla 907 



sarmentosus 899 



serotinus 390, 907 



silveanus 421, 965 



simplex 901 



thermale 901 



strictus. 428, 963 



tenuispica 870 



teretif olius 421, 965 



texanus 430, 965 



tharpii 430, 965 



thurberi 906 



torreyanus 390, 907 



tricholepis 826 



uniflorus 390, 907 



utilis 382, 907 



vaginatus 965 



vaginiflorus 416, 965 



inaequalis 965 



minor 965 



neglectus 964 



virginicus 418, 965 



wolfii 907 



wrightii 413, 430, 966 



Sprangletop 491 



green 491 



red 492 



Spreading wheatgrass 240 



Spreta, group of Panicum 654 



Squirreltail 262, 263 



big 263 



Hansen 263 



Stapfia 997 



colusana 908, 997 



Stargrass 530 



Stegosia exaltata 947 



Steinchisma divaricatum 875 



hians. 918 



Stelephuras pratensis 936 



Stem of grasses 6 



Stenochloa calif ornica 856 



Stenotaphrum 585, 966 



americanum 966 



dimidiatum var. americanum 966 



secundum 966 



glabrum 585 



americanum 966 



