382 



ARRANGEMENT. 



[ROOK in. 



17. Clustered (aggregatus, coacervatus, conglomeralus); collected in parcels, each 

 of which has a roundish figure ; as the flowers of Cuscuta, Adoxa, Trien- 

 talis, &c. 



17 



18. Spiral (spiralis); arranged in a spiral manner round some common axis ; as 

 the flowers of Spiranthes. 



1 9. Decussate (decwsatus} ; arranged in pairs that alternately cross each other ; 

 as the leaves of many plants. 



20. Fastigiate (fastigiatus) ; when all the parts are nearly parallel, with each 

 pointing upwards to the sky ; as the branches of Populus fastigiata, and 

 many other trees. 



21. Squarrose (squarrosus) ; when the parts spread out at right angles, or 

 thereabouts, from a common axis ; as the leaves of some Mosses, the 

 involucra of some Compositee, &c. 



22. Fasciated (fasciatus) ; when several contiguous parts grow unnaturally 

 together into one ; as the stems of some plants, the fruits of others, &c. 



23. Scaly (squamosus) ; covered with small scales, like leaves. 



24. Starved (depauperate) ; when some part is less perfectly developed than 

 is usual with plants of the same family. Thus, when the lower scales of a 

 head of a Cyperaceous plant produce no flowers, such scales are said to be 

 starved. 



25. Distant (distans, remotus, rarus) ; in contradiction to imbricated, or dense, 



or approximated, or any such words. 



26. Interrupted (interrwptus) ; when any symmetrical arrangement is destroyed 

 by local causes, as, for example, a spike is said to be interrupted when here 

 and there the axis is unusually elongated, and not covered with flowers ; 

 a leaf is interruptedly pinnated when some of the pinnse are much smaller 

 than the others, or wholly wanting ; and so on. 



27. Continuous, or uninterrupted (continuus) ; the reverse of the last. 



28. Entangled (intricatus) ; when things are intermixed in such an irregular 



manner that they cannot be readily disentangled ; as the hairs, roots, and 

 branches of many plants. 



29. Double, or twin (f duplicatus, geminatus) ; growing in pairs. 



30. Rosaceous (rosaceus) ; having the same arrangement as the petals of a 

 single rose. 



