Microseasons
Motifs
花
From Mittwer's book, which is Eulalia, burnet-bloodwort, smartweed, pigeonberry, Pink in a Bisk-ware octopus-trapping pot
From Sen's Chadō, which is 木槿.
According to the Chadō Textbook:
はぎ (Buschklee)
すすき (Chinaschilf)
葛(くず)
なでしこ / せきちく (Chinesische Nelke)
おみなえし (Goldbaldrian)
ふじばかま (Wasserdost, Wasserhanf)
ききょう (Ballonblume, Chinesische Glockenblume)
しゅうかいどう (Begonie, Schiefblatt)
ほととぎす (Japanische Krötenlilie)
みざまりんどう (Enzian)
しゅうめいぎく (Herbst-Anemone)
Issoan Tea also explains that there are 7 grasses of autumn (秋の七草, あき の なな くさ), often mentioned in Japanese poetry:
はぎ (Buschklee)
すすき (Schilf)
くず
なでしこ (Dianthus)
おみなえし (Baldrian)
ふじばかま (Wasserdost, hemp agrimony; Eupatorium fortunei)
あさがお (modern Japanese: ききょ, Prunkwinde, bellflower; Platycodon grandiflorum)
和菓子
From Sen's Chadō, which is こはぎ 餅 (bush clover, one of the seven autumn grasses)
For 干菓子, it's raw sugar shaped like taro, and like the leaf of it.