1–8C. siculus subsp. siculus1 leaf 2 bracteole 3 outer sepal 4 inner sepal 5 stamen 6 ovary and style 7 capsule 8 seed. From Sharobiem & Shalaby 942 (CAIM) 9–17C. virgatus var. virgatus9 leaves 10 bracteole 11 outer sepal 12 middle sepal 13 inner sepal 14 stamen 15 ovary and style 16 capsule 17 seed 9–10 & 16–17 from Rechinger 3988 (W) 11–15 from Aucher-Eloy 4955 (W) 18–25 C. rhyniospermus 18 leaf 19 bracteole 20 outer sepal 21 middle sepal 22 inner sepal 23 stamen 24 ovary and style 25 seed. From Kotschy 235 (W) 26–34C. hystrix subsp. hystrix26 habit showing spines and flower position 27 leaf 28 bracteole 29 outer sepal 30 inner sepal 31 stamen 32 ovary and style 33 capsule 34 seed. From Sa’ad 1444 (CAIM) 35–43 C. glomeratus 35 leaf 36 bracteole showing variation in shape 37 outer sepal 38 middle sepal 39 inner sepal 40 stamen 41 ovary and style 42 capsule 43 seed. 35 from Schimper 784 (W) 36–41 from Täckholm et al. 786 (CAI) 42–43 from Täckholm et al. 944 (CAI).