78 



WILD FLOWERS OF CALIFORNIA 



905. 



906. 



Galinsoga parviflora 



Bebbia juncea and var. 



Waste places, 

 introduced 

 Mexico. 



Los Angeles, 

 weed from 



Partly shrubby. Deserts 

 southern California. 



TARWEED TRIBE MADIEAE 



907. Tarweed Madia 



Erect annual and perennial herbs often sticky and heavy scented. Known by 

 the fact that the excretions soil clothing and their abundance. Flowers yellow, 

 opening in the evening and closing before noon of the next day. No pappus. 

 Many of them troublesome farm and roadside weeds. A cooking oil has been 

 obtained from Madia dissitiflora. The seeds of Madia densiflora are agreeably 

 aromatic. Medicinal. 



908. Madia sativa Sweet-scented. 



909. Madia capitata 



910. Madia dissitiflora 

 910a. Madia exigua 



911. Madia elegans 



912. Madia madioides 



913. Madia radiata 



914. 



915. Tarweed 



Hemizonella minima 

 and var. 



Low annual herb with mi- 

 nute yellow flowers. No 

 pappus. Dry sterile soil 

 throughout the Sierras. 



Hemizonia (Centromadia, 

 Calycadenia) 



A large genus of perhaps twenty-five species in the State. Annuals and per- 

 ennials (one woody), white or yellow flowers in numerous heads. The species 

 are extremely variable and difficult to determine accurately. Some, called Spike- 

 weeds have spiny leaves and have been placed by themselves in a genus Centro- 

 madia, but the flowers do not show sufficient characters to separate them. 



Hemizonia luzulaefolia is very common in the grain fields and Hemizonia 

 pungens is highly prized as a bee plant. Jepson reports tens of thousands of acres 

 of alkaline plains of the upper San Joaquin utilized in the production of Spike- 

 weed honey. Most of the species are well classified in Jepson's flora of Middle 

 Western California and Hall's Compositae of Southern California. We will not 

 attempt to enumerate them. The genera Holocarpha, Harpaecarpus, Calycadenia 

 (the Rosin weeds) and Blepharizonia are also included by some with Hemizonia. 



916. Lagophylla ramosissima An erect annual, simple or 



much branched, the 

 branchlets fine and brittle. 

 Leafage scanty and soon 

 falling. Rays yellow and 

 inconspicuous. Dry hill- 

 sides. San Bernardino to 

 Oregon. Frequent from 

 Truckee to Nevada line. 



917. 



918. Silver Scale 



Holozonia filipes 



Achyrachaena mollis 



Perennial with creeping 

 rootstocks. Stems and 

 branches slender. North 

 Coast Ranges. 



Low, soft pubescent annual, 

 flowers yellowish, turning 

 brown. Conspicuous at 

 maturity by the silvery 

 scales of the pappus which 

 spread out, appearing like 

 white petals, forming 

 white patches in adobe 

 soil of the interior valley. 



