224 FLOWERS OF WASTE PLACES, ETC. 



flowers, The calyx, roughly hairy, is spreading above, tubular, with five 

 roughly-hairy teeth. The corolla is gaping, with a short cylindrical tube, 

 inflated with a ring of hairs inside. The bracts or leaf-like organs are 

 numerous, not overlapping, nearly stalkless. The seeds are triangular, 

 pale-brown, included in the calyx. The plant is rarely a foot high. It 

 flowers from May to August. It is an annual, propagated by seed. 



The flower is similar to that of the White Dead Nettle, but the 

 tube is only 10-11 mm. long, and for 4-5 mm. at the top is enlarged, 

 so that a humble-bee can insert its head. A hive-bee with a proboscis 



Photo. B. Hanley 



PURPLE DEAD NETTLE (Lamium purpureum, L.) 



6 mm. long can suck honey. The flowers are homogamous, the stigma 

 and anthers ripening together. The angle between the two stigmas is 

 less at first, and the lower stigma first stood between or above the 

 anthers, being turned down afterwards. Before the flower opens the 

 stigma and anthers have come in contact, and self-pollination has taken 

 place. The hive-bee, Anthophora, Bombus, Melecta, Halictus, Bomby- 

 lius, visit Purple Dead Nettle. The nutlets fall when ripe around the 

 parent plant. 



A clay soil suits Purple Dead Nettle, which is a clay-loving plant, 

 or a sand soil, when it is a sand-loving plant. 



Two Hymenoptera, Anthidium manicatiim, Anthophora qziadri- 

 maculata, and a moth, Speckled Yellow ( Venilia maculata], are found 

 upon it. 



